Lh Surge But No Ovulation Cause

Ruth asks…

what does LH and progesterone do in the menstruation cycle?

Pregnancy Advisor’s answers:

The Hormones In Action When A Woman Ovulates.
When a woman ovulates, various hormones in her body are synchronized to prepare her for ovulation, fertilization and implantation. Ovulation occurs approximately 10-12 hours after the LH peak.

Here are the primary hormones involved in ovulation in women:

1.Progesterone – The ovaries produce significant amounts of progesterone during the 2 weeks or so that follow ovulation. Progesterone thickens the nutrient-rich endometrium in preparation to receive a fertilized egg. It also acts on the breasts to prepare them for milk production (lactation).
2.Estrogen – Estrogen is produced in increasing quantities prior to ovulation, helps the uterus rebuild its lining (or endometrium) after menstruation. In addition, estrogen and progesterone also act as feedback controls on the brain hormones LH and FSH. In other words, these sex hormones travel to the brain to increase or decrease LH and FSH production. This feedback mechanism helps to regulate the timing and the events of the menstrual cycle.
3.Estrogen and progesterone are both made primarily in the ovaries from cholesterol. Initially, the ovaries use cholesterol to derive progesterone and the male sex hormone testosterone. Then the ovaries convert a good portion of the progesterone and almost all of the testosterone into estrogen. After ovulation occurs, more progesterone is made than can be converted; consequently, significant amounts of progesterone are secreted only during the latter half of the cycle.
4.LH- The LH surge is initiated by a dramatic rise of estradiol produced by the preovulatory follicle. The LH surge occurs 34 to 36 hours prior to ovulation and is a relatively precise predictor for timing ovulation. The LH surge stimulates luteinization and stimulates the synthesis of progesterone responsible for the mid cycle FSH surge. Also, the LH surge stimulates resumption of meiosis and release of ovum.
5.FSH- Estradiol levels fall dramatically immediately prior to the LH peak. Elevated FSH levels at this time are thought to free the ovum from the follicular attachments. Progesterone is responsible for stimulating the mid cycle rise in FSH. The mechanism causing the postovulatory fall in LH is unknown. The decline in LH may be due to the loss of the positive feedback effect of estrogen, due to the increasing inhibitory feedback effect of progesterone, or due to a depletion of LH content of the pituitary from downregulation of GnRH receptors.

Mary asks…

How does an OPK work? I’m TTC and new to this all.?

I’ve never used one before. Does it predict if your ovulating when you take the test? or does it predict your ovulating later? because I thought you were more fertile a couple days before you ovulate. Thanks lots Baby dust to all!!!

Pregnancy Advisor’s answers:

Hey hun i use the OPK… And always get positive for three days which alwasy confuses me as to exactly when i ovulated :)

Yes it does predict your ovulation. Once you get your positive, you will ovulate in 12-36 so get baby making on the day of positive and even before you get a positive.

What i found online:

Ovulation tests work by detecting Luteinizing Hormone (LH). At the beginning of the menstrual cycle, the body begins to produce follicle stimulating hormone (FSH). FSH facilitates the formation of a follicle on one of the ovaries. The follicle contains and nurtures the ovum. When a follicle has adequately matured, a surge of Luteinizing Hormone (LH) causes the follicle to burst and release the ovum into the fallopian tube – the moment of ovulation.

Throughout the menstrual cycle, a small amount of LH is produced, but during the middle of the cycle LH briefly and dramatically increases, and is known as LH surge. Elevated quantities of luteinizing hormone that facilitate ovulation are detected by ovulation tests through anti-LH antibodies contained in the sensitive testing membrane. Ovulation tests thus allow you to accurately predict when you will ovulate. A positive result on an ovulation test means that the woman will most likely become fertile over the next three days – with peak fertility at 36 hours following the LH surge.

Betty asks…

if pregnant, could there still be a line on the OPK?

If you are pregnant, would your opk sticks be invalid? Does the pregnancy hormone cause you not to have a LH surge? I have been doing opk and think might be pregnant(by way feel) and haven’t seen a line next to the control line at all. I am almost done with sticks.

Pregnancy Advisor’s answers:

If a pregnant woman uses an Ovulation test it will be positive. Http://www.peeonastick.com/opkhpt.html

Nancy asks…

Got a positive on ovulation test on Sunday it is now Wednesday and………?

I am still getting a positive that I am ovulating. Is it possible to get a positive Ovualtion test for four days if not why is this going on, what could cause the test to read positive for so long.
I have a one year old child already, I am healthy do not have PCOS, and I did read the directions clearly both lines where very clear and definatly not misunderstood
The test I took on sunday gave me a faint second line but it was there, the test i took today had a very dark almost as dark as the control line result

Pregnancy Advisor’s answers:

I don’t know about 4 days, but you can have a positive for a couple of days….it is all dependant on the surge strength (LH). Just remember that the test line has to be as dark or darker than the control line in order to actually be positive. Anything fainter is negative.

Susan asks…

So confusing when did I roughly ovulate?

I’m 25 weeks pregnant due date 23rd April, they originally gave me a due date of 27th April then pushed it forward? My period was either on 19th July or 20th can’t b sure. I have regular periods each month with it sometimes being few days late. I had sex the 27th, 28th, 31st July and 1st,2nd August. How accurate are these due dates? If they put a earlier due date say the 20th I worked it out that means my last period was the 16th July so it can’t even give or take a few days on due date, because I know it was on the 19th or 20th…

Which of these days wld I most likely of ovulated on? With my period dates and due dates is it possible my ovulation was earlier and I conceived on the 27th or 28th July?

Pregnancy Advisor’s answers:

Why does it matter now. You are pregnant so i don’t understand why you need an exact date of ovulation. Anything is possible with ovulation. If you are really regular, then you probably ovulated around the 2nd or 3rd of August. Ovulation is “generally” 14 days after the first day of the period. But it is NOT a given. Read what i copied below:

Copied from web md:
Day 14
Ovulation occurs mid-cycle, but can vary from between Day 11 and Day 21 of a woman’s cycle. Rising estrogen levels trigger the LH surge, which causes the follicle to ovulate and release an egg. It’s important to chart your basal body temperature and LH surge so you know when you ovulate.

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