Lh Surge Ovulation And Pregnancy

Nancy asks…

in your option what is the best way to track ovulation?

i have used a few on line calculators but they all say different days… i’m not sure about the ones you can buy at the store they are pretty expensive and i have read up about the basil temp and cervical mucus check but i’m still not sure witch is the best. what worked for you?

Pregnancy Advisor’s answers:

I did pretty much the same as the person above me, I tracked my periods and knew that you typically ovulate mid-cycle and sure enough, when I started tracking cervical mucus (stretchy egg white kind) I was ovulating on exactly day 14 and for my third and fourth pregnancies I got pregnant pretty much the first month we were “really” trying!! Best wishes hon :)

Edit, if you use ovulation kits I would use the pricier digital ones, the ones with lines are a bit tricky to read, the lines have to be the SAME color and then they (all of them even digital) only indicates your LH surge which means you SHOULD ovulate in the next 24 hours but doesn’t actually mean you will or have ovulated!!! I did a lot of research on this issue b/c my BFF has sever PCOS!!!

Linda asks…

Why does a womens body temperature rise during her menstral cycle?

If anybody knows a website can you please let me know. Thanks

Pregnancy Advisor’s answers:

The rise in temperature is due to the hormone progesterone. Progesterone is produced by the corpus luteum, (that’s latin for “yellow body”), which develops from the follicle after it has launched it’s egg. Hence it is used as a sign that ovulation has occurred. If a pregnancy does not occur, the corpus luteum disintegrates and progesterone levels drop again (and hence so does a woman’s basal body temperature).

You can read more on this link:


If you are trying to get pregnant, it’s more accurate to measure luteinising hormone levels using available urine test kits. The LH surge happens before ovulation, whereas the temperature rise happens afterwards.

Ruth asks…

Steps of the Menstrual Cycle and the Hormones that Affect Them?

May someone tell me the steps of the menstrual cycle and the hormones that affect them?
Please be as specific as possible.
Thank you :3

Pregnancy Advisor’s answers:

The menstrual cycle is divided into two phases–the follicular or proliferative phase; and the luteal or ovulatory phase. The follicular phase includes the time when menstruation occurs and is followed by proliferation or the growth and thickening of the endometrium. This phase typically lasts from 10 to 14 days, starting with the first day of menstruation.

Estrogen and progesterone levels are at their lowest during menstruation. When bleeding stops, the proliferative phase begins causing the endometrium to grow and thicken in preparation for pregnancy. During the next (approximately) two weeks, FSH levels rise causing maturation of several ovarian follicles and the size of the eggs triple.

FSH also signals the ovaries to begin producing estrogen which stimulates LH levels to surge at around day 14 of your cycle triggering one of the follicles to burst, and the largest egg is released into one of the fallopian tubes.

This phase is followed by the premenstrual phase, known as the luteal phase. This premenstrual period lasts approximately 14 days. After ovulation, LH causes the corpus leuteum to develop from the ruptured follicle. The corpus leuteum produces progesterone.

Together estrogen and progesterone stimulate the endometrium to prepare a thick blanket of blood vessels that will support a fertilized egg should pregnancy occur. When pregnancy occurs, this blanket of blood vessels becomes the placenta which surrounds the fetus until birth.

When pregnancy does not occur, the corpus leuteum deteriorates and becomes the corpus albicans. Once this occurs, progesterone and estrogen levels decline, and the endometrial lining is shed during menstruation.

Lisa asks…

I have a question about ovulation and pregnancy?

My two friends were having a debate. Friend a said that when you are pregnant if you take an ovulation test; the test will be accurate.
Friend b said that was false because you do not ovulate when you are pregnant.

I agree with friend B

Who do you agree with? Will the ovulation test results be accurate if you are already pregnant?

Please note, I am not pregnant. This was a debate

Pregnancy Advisor’s answers:

Interesting question that you ask. Funnily enough, I’m right in the middle of a little demonstration on this topic. I’ve been using ovulation tests and pregnancy tests together and posting pictures to share with my online group of TTC friends. So I’ve really got the scoop on this (plus several years of experience mastering all information related to hormones because it related to my birth control method.) ;)

Neither one of your friends is exactly correct nor completely wrong. Here’s the break-down:

TRUE: If a pregnant woman uses an ovulation test, the test will turn positive.
TRUE: You do not ovulate when you are pregnant.
FALSE: Even though the ovulation test WILL turn positive for pregnancy, it can’t be considered an “accurate” way to determine pregnancy.

– An ovulation tester is looking for a hormone called Luteinizing Hormone (LH). LH is responsible for causing a hole to appear in the follicle encasing a mature egg, and the egg will then burst through this hole in the act of ovulation. A sudden surge of LH indicates that ovulation is near, so that’s what the test is designed to measure and why.
– After ovulation, the empty egg-follicle becomes called a “corpus luteum” and it begins producing progesterone. Amongst other things, progesterone blocks your body from ovulating again until your next cycle. Obviously, if you’re pregnant your next cycle will be a long way away, but it’s important to note that even NON-pregnant women do not ovulate either, that is AFTER they’ve already ovulated for that cycle. You ovulate once per cycle whether you end up pregnant or not. (Fun side-note: Fraternal twins come from two eggs that are released more or less simultaneously, before progesterone has had a chance to stop the second egg from being released.)
– However, after ovulation, many women DO experience a secondary or even tertiary surge of LH associated with a surge of estrogen as well. This LH surge will NOT produce another egg, though, because even small amounts of progesterone will powerfully stop this from happening. So if you keep using ovulation tests even after you know you’ve ovulated, you may see positive ovulation tests again. Yet it does NOT mean that you’re ovulating. Weird but true. So this is one way that ovulation tests are not foolproof indicators that ovulation is approaching or that a positive means exactly what you think it means.
– Now, the REALLY INTERESTING PART: The pregnancy hormone, HcG, is molecularly similar to LH. The HcG molecule is just a little more complicated. The ovulation tests will turn positive for either molecule. Pregnancy tests will turn positive ONLY for HcG. Rather than explain exactly why, go here to find a great picture demonstration to show why OPK’s can work as pregnancy tests: http://www.peeonastick.com/opkhpt.html .

However, it’s NOT a great idea to use OPK’s as a pregnancy test because of that secondary surge of LH I told you about. Even after ovulation has been confirmed, you can still get NON-pregnant positive OPK’s. Basically, though, Friend A is correct if you add the statement, “But it’s not a firmly reliable or recommended way to find out you’re pregnant.” If you’re past ovulation and get a positive ovulation test, you can use it as a clue to consider taking a real pregnancy test, but then you should consider only the results of the pregnancy test as being accurate.

I also have personal experience with this, btw, as I mentioned at first. I had positive OPK’s at 6 days past ovulation (secondary LH surge) and 9 days past ovulation. At 10 and 11dpo, my OPK’s were nearly-positive but not quite. However, today at 11dpo, I got a faint but unequivocal positive on a pregnancy test. (Yippee!!) Anyway, long and short being that the ovulation tests WILL turn positive for me in the next few days as my HcG builds up strong enough, but I still found for sure by a pregnancy test first.


Lizzie asks…

Can someone help with this whole ovulation thing?

Okay, I was planning when my next period was going to be and it got me thinking. Can someone explain this thing about being fertile before ovulation and what everything about being fertile means? Be serious plz. :)
Okay I think I’m starting to understand. I’ve heard of ppl using this when they try to concieve but I’ve also heard ppl using it for the vice versa reason. Something called ‘rythm methods’ I think. What are those? O thnx 4 the input so far. :)

Pregnancy Advisor’s answers:

Fertility is the ability to conceive a baby. The most ‘fertile’ time in the average cycle is around day 14 (based on a 28 day cycle. Different cycle lengths may change that day some).

If you are trying to conceive, you could try ovulation predictor kits that measure your LH surge…or the time you are most ‘fertile’ and likely to conceive. Or if you are a calendar watcher, some of the pregnancy websites have calendars on them that will help gauge within a few days based on your LMP and cycle length.

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