How Long Does A Lh Surge Last In The Urine

Maria asks…

Need some advice on ovulation?!?

Started period on January 22, 2013 and it lasted 7 days. We are trying to conceive a baby and need to know when I’m ovulating. I have taken ovulation tests, but they say I’m not ovulating yet, but the medical sites say I’m ovulating. Any advice would be helpful! Thanks!

Pregnancy Advisor’s answers:

“You ovulate 14 days after the start of your period.” Blah blah blah.
FYI, this is complete and utter rubbish regurgitated by people who have no idea what they’re talking about.

1) Medical websites are quoting a “textbook example” of what THEY think a cycle should look like. If you check on a medical website, it says your blood pressure should be roughly 120/80. Is your blood pressure exactly 120/80 right now? Nope. Bet not. You’re a unique individual with your own unique blood pressure. You’re not a textbook example of a human. Long and short is that if you’re reading medical websites looking for information about your UNIQUE body, you’re barking up the wrong tree. All those websites give you is limited information about general human averages. You are not an average. So stop looking at those. They’re useless to you for this purpose.

2) Counting days doesn’t really work anyway, like medical websites and other yahoo users suggest. How long your period lasts doesn’t matter. Always start counting from the first day of your period. Doesn’t matter when it ends when you’re trying to figure anything out about your cycle. But that’s just the semantics of how you number the days. Will that tell you anything about your cycle? Not really. You don’t necessarily ovulate on the same cycle day each month. So counting out the days is pretty useless by itself. So ignore those who suggest you should do so.

3) Ovulation tests aren’t foolproof. They actually can NOT tell if you are definitely about to ovulate. All they’re doing is checking levels of a hormone called LH. Most of the time, women will ovulate shortly after a surge of LH– but not 100% of the time. Sometimes there is an LH surge that does NOT result in ovulation. So a positive test doesn’t actually prove you’re about to ovulate. It’s just a hint that you might. The opposite is true too, though– just because you have negative tests doesn’t mean you’re NOT ovulating. An LH surge can last a very short amount of time, and if you’re only testing once a day, you can easily miss out on “catching” the surge on your tests. The relative dilution of your urine also matters. You could be having an LH surge but still test negative if the urine you test is pale and very watery.

My personal unique pattern is that I usually ovulate on Cycle Day 20 (with Cycle Day 1 being the first day of full red bleeding of period). Medical websites would tell me CD14 is ovulation day– see how they’re wrong for me? Glad I know other ways to figure out ovulation. In the past year or so, I’ve ovulated as early as CD16 and as late as CD34. Obviously, websites and random yahoo people cannot have told me any of that information about my unique body and my particular fertility patterns.

I hope I’ve persuaded you, if nothing else, to stop looking for answers here. Most people who answer yahoo answers questions about fertility are clueless themselves, just spewing back incomplete and useless crap they heard in sex ed one time in high school.

A better source to begin figuring out when YOU ovulate and to learn something about YOUR body is the website below. It has a free basic version you don’t have to pay anything for, and it has tutorials to train you to begin paying attention to your own body. I especially recommend paying attention to the bits about cervical fluid/mucus. That’s a good cue if you have decently regular cycles.

The BEST source, though is a book called Taking Charge of Your Fertility by Toni Weschler.

If you have the libido of a bunny and no interest in learning anything new about your body, though, this standard advice should eventually get you pregnant (assuming you have no fertility problems as a couple):

Have sex every two days throughout your cycle until you become pregnant. At the very latest, have sex every third day– that would decrease your chances very slightly but not much. Having sex often like that guarantees that you hit your fertile window one way or another, and then it’s just a matter of getting lucky enough to conceive and have the baby stick. (Only 20-25% of cycles result in conception, even in healthy couples. So even if you’re having lots of sex, it may still take a few cycles to get pregnant doing that.)

Good luck!

Lizzie asks…

LH detection question?

Alrighty, here’s my confusion. I had a positive opk yesterday around noon….. I’m a peeonastickaholic and got lots of ovulation test strips cheap, so decided to test again later in the day and line was lighter. Tested again this morning, line was very faint and then tested again tonight and there was no line at all. Is this normal after getting a positive opk? When I got my positive the result line was JUST AS dark as the control line. I made sure my urine wasn’t overdiluted from too much fluid intake and didn’t pee for like 3 hours before testing. I am currently on cd12 and ovulated on cd17 last month so I don’t really know how long a test should be detecting LH
Also, I had a miscarriage back in March and have not had any visible EWCM, kind of hard to detect ovulation when your cm isn’t really cooperating. We are trying preseed this month too.

Pregnancy Advisor’s answers:

The first day of a positive opk is important, because you onky need one to know that in 12-48 hours you will ovulate. Atest can last one day, or up to 2days if you catch the rise peak and fall of the lh surge. Don’t worry, but hopefully u already had sex! After a positive surge u are supposed 2 have sex that day and the 3 after to make sure in case of late ovulation.

Susan asks…

Breastfeeding 10+ months, and no AF yet. On minipill, but having lots of signs…what are odds I’m pg?

I’ve recently been having light-headedness, nausea, heartburn (which I had with my first two pregnancies), dizziness, extreme fatigue…I took an HPT the other night but it was negative. What are the odds that it’s just not showing up, but I am pregnant anyway? One of my friends never got a + HPT in the 1st trimester with any of her 3 pregnancies…what are the chances? How long do I wait before getting a blood test (since I have no idea where I am in my cycle, IF I’m even having a cycle)?

Pregnancy Advisor’s answers:

To be sure a negative pregnancy test is a True Negative, you need to wait between 1 to 2 weeks after the last intercourse before testing. The fertilized egg takes approximately one week to travel down the fallopian tube before implanting in the uterine lining and producing chorionic gonadotropin which is what you are testing for in the pregnancy test. Now, the urine test only tests for the alpha chain of the hormone which is the same for several other hormones including luteinizing hormone, which is why a urine pregnancy test can pick up the LH surge that produces ovulation. The blood test checks for the beta chain of the pregnancy hormone which is specific for that particular hormone, and so is more specific than the urine test. Both tests are fairly sensitive and should be able to pick up an early pregnancy. I would suggest that the side effects of the progesterone only minipill may be causing your symptoms. The premenstrual syndrome symptoms and early pregnancy side effect symptoms are similiar because they are both due to the same thing, progesterone. Keep in mind that using 2 barrier methods (ie. Condoms and contraceptive foam or spermicide suach as Vagifilm) are as good as hormonal contraception- 99%.

Carol asks…

LH detection question?

Alrighty, here’s my confusion. I had a positive opk yesterday around noon….. I’m a peeonastickaholic and got lots of ovulation test strips cheap, so decided to test again later in the day and line was lighter. Tested again this morning, line was very faint and then tested again tonight and there was no line at all. Is this normal after getting a positive opk? When I got my positive the result line was JUST AS dark as the control line. I made sure my urine wasn’t overdiluted from too much fluid intake and didn’t pee for like 3 hours before testing. I am currently on cd12 and ovulated on cd17 last month so I don’t really know how long a test should be detecting LH.
Also, I had a miscarriage in March and have not had visible EWCM at all since so trying preseed this month. Kinda hard to go by your cm when you really aren’t showing any!!!
yeah if I don’t get a BFP this month I’m going to start charting next month.

Pregnancy Advisor’s answers:

The day of ovulation can change each cycle. So just because you ovulated on a certain cycle day last cycle, does not mean that the same thing will happen this cycle.

Most people will ovulate 12-48 hours after the LH surge is detected, most common is 36 hours after the actual surge.

It is more common to only get one day of positive testing, but it is not uncommon to have two days of a positive tests.

My guess is that when you got the positive, it was most likely at the peak of your surge right before or at the time that the level was dropping. That is why the next day when you tested you got a light line- only a little LH was left in your system and by the next time none.

What you experieced is normal. You should not get a dark line for many days. If you do then the test is not reliable and you may want to talk to your doctor about your results.

Read this: http://www.fertilityplus.org/faq/opk.html

Sandra asks…

How long does an Ovulation test stay positive for?

I was wondering how long a ovulation test can stay positive for. Mine has been positive for 5 days, and I had a D&C Sept.11,2007 and my cycle has been wierd ever since then. At first I started my period Oct.11,then Nov..6,Dec.6,then my last one was Jan.2nd. Why is my cycle so messed up,and my last period was only 2 1/2 days, usually it’s 7 days. I have been cramping since a couple days b4 ovulation, and the first few days hurt me bad, the cramps felt like labor, I’m still cramping now. Just not as bad. Can my body be still trying to get back to normal from the missed miscarriage and D&C?

Pregnancy Advisor’s answers:

Yes,your body could still be trying to get back to normal and your cycles could be messed up from the miscarriage and D&C every womens body reacts differently to things like that and for some their bodies need more time to heal than others might need.It can take 3 to 6 months or longer for your body to get back to normal.

After you get your 1st positive ovulation test your suppose to stop testing cause you can still have the LH surge still in your urine up til you start your period and if you keep testing and keep getting positive results it will confuse you and make you think your ovulating more than once.I hope I help you out some,Best of luck to you,hope every thing gets back to normal soon and you finally get your healthy pregnancy.Truck loads of **BABY DUST**headed your way!!

Powered by Yahoo! Answers