Waiting for a full two months—or for a complete and normal menstrual cycle, which generally takes about two months—ensures that the pregnancy hormone hCG has dipped to levels so low that it's undetectable. The uterine lining will also return to normal, making it receptive to receiving a future fertilized embryo.
One explanation for the claim is that after a miscarriage, levels of hormones like progesterone, which facilitates gestation, are still elevated, increasing fertility.
Hyperovulation after miscarriage
It's possible to ovulate and get pregnant as soon as two weeks after a miscarriage. While some sources state that fertility goes up after pregnancy loss, studies show mixed findings.
Most women conceived at a median of four months after a miscarriage, with ~60% and 20% becoming pregnant within 6 months vs. 5-11 months, respectively. After an induced abortion, the subsequent pregnancy occurred at a median of 17 months, with only a fifth occurring within six months and another fifth at 6-11 months.
According to the American College of Obstetricians and Gynecologists (ACOG), women can ovulate as soon as 2 weeks after a miscarriage, if it occurs within the first 13 weeks of pregnancy. If miscarriage occurs in the later stages of pregnancy, their cycle may take longer to adjust.
In the United States, the most common recommendation was to wait three months for the uterus to heal and cycles to get back to normal. The World Health Organization has recommended six months, again to let the body heal.
They found that in women whose previous pregnancy had ended in a live birth, the risk of miscarriage the next time around was only 5% (1 in 20). With all previous pregnancies ending in a live birth, the risk was even lower still at 4% (1 in 25). Obviously, the risk of miscarriage will never be zero.
If your menstrual cycle lasts 28 days and your period arrives like clockwork, it's likely that you'll ovulate on day 14. That's halfway through your cycle. Your fertile window begins on day 10. You're more likely to get pregnant if you have sex at least every other day between days 10 and 14 of a 28-day cycle.
You are also recommended to take folic acid supplements as this prevents certain types of congenital abnormalities in the baby. It is important to keep up with your doctor's appointments when you are trying to conceive, especially after a miscarriage.
No sex, tampons, or douching for 2 weeks.
We recommend waiting until after 2 normal periods to attempt pregnancy again.
Recurrent early miscarriages (within the first trimester) are most commonly due to genetic or chromosomal problems of the embryo, with 50-80% of spontaneous losses having abnormal chromosomal number. Structural problems of the uterus can also play a role in early miscarriage.
While excessive stress isn't good for your overall health, there's no evidence that stress results in miscarriage. About 10% to 20% of known pregnancies end in miscarriage.
Menstrual changes post-miscarriage
In the first few cycles after a miscarriage, you might experience heavier than usual flow, with more than typical clotting, discharge, or odor. You may also have lighter bleeding for a few months. Your period could last longer than usual, or be more than usually painful.
Miscarriage is usually a one-time occurrence. Most women who miscarry go on to have healthy pregnancies after miscarriage. A small number of women — 1 percent — will have repeated miscarriages. The predicted risk of miscarriage in a future pregnancy remains about 20 percent after one miscarriage.
Mostly due to chromosomal problems or genetic issues with the embryo. Studies show that 50-80% of spontaneous losses are due to abnormal chromosomal numbers. As well as structural problems within the uterus. Late recurrent miscarriages may be the result of autoimmune problems, uterine abnormalities.
Just 2 percent of pregnant women experience two pregnancy losses in a row, and only about 1 percent have three consecutive pregnancy losses. The risk of recurrence depends on many factors. After one miscarriage, the chance of a second miscarriage is about 14 to 21 percent.
One of the ways to track ovulation following a miscarriage is to use an ovulation predictor kit (OPK). OPK kits are used to detect the levels of luteinizing hormone (LH) that are excreted in the urine. The goal is to identify the LH surge that typically happens 24–36 hours prior to ovulation.