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Miscarriage Statistics by Week – When To Stop Worrying

miscarriage statistics by weekAfter 6 months of trying, we finally conceived, only to miscarriage in the fifth week of pregnancy. This was followed by a long and emotionally exhausting period of keeping track of ovulation, timing the lovemaking, BBT charting and hoping. It took another 9 months before we finally conceived again. I know that this is nothing compared to what many other couples go through, but it was still very tough.

When I finally got pregnant again, I became very worried that I would have another miscarriage. I don’t know how many hours I spent on the Internet looking for miscarriage statistics by week of pregnancy.

When I experienced bleeding in week 8 of my pregnancy, I panicked. I called my midwife (I had my first prenatal visit scheduled a couple of weeks later) and she asked me to come in for an early ultrasound. I did and I got to see what was going to be my daughter some months later. I saw her little heart beating and I saw the little embryo moving around. It was a fantastic feeling.

This little peek inside my womb helped me stop worrying somewhat, but I did continue counting the days until week 12 had passed. I also read and learned quite a bit about miscarriage.

If you are feeling anxious like I did, I’d like to help you save a few hours. I have gathered and compiled the most recent miscarriage statistics that I’ve been able to find.

At the bottom of the page, you’ll find references to research as well, in case you want to dig deeper.

Being pregnant is a very special time, and one filled with worrying! If you are very worried about having a miscarriage, or if you already have had one, you can at least take some comfort in that the newest research shows that there is no need to wait 6 months before trying again. You can start trying again almost immediately. You can read about this in this article about getting pregnant after miscarriage. At the bottom of that article several moms and dads who have been through a miscarriage share their thoughts and feelings about it.

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Now to the statistics!

Miscarriage Risk By Week

Gestational week
All healthy women
Healthy women, one live embryo
seen on ultrasound
% risk of miscarriage
% risk of miscarriage
3-4 weeks
5-8 weeks
6 weeks
7 weeks
8 weeks
9 weeks
10 weeks
8-14 weeks
2nd trimester
3rd trimester

References: Tong S, Kaur A, Walker SP, Bryant V, Onwude JL, Permezel M. Miscarriage risk for asymptomatic women after a normal first-trimester prenatal visit. Obstet Gynecol. 2008 Mar;111(3):710-4.
Wilcox AJ, Weinberg CR, O’Connor JF, et al. Incidence of early loss of pregnancy. N Engl J Med. Jul 28 1988;319(4):189-94.

According to these figures, the risk of miscarriage right after conception is very high, between 22% and 75%. This wide range reflects that different studies have found different rates of miscarriage. My guess is that the stats have such a wide range for these first few weeks of pregnancy, because it is hard to measure pregnancy this early.

After the 10th week of pregnancy, the risk of miscarriage is really low, especially if a live embryo has been seen with an ultrasound scan.

These miscarriage statistics by week all refer to a woman’s first pregnancy. How about the next one? And the next? Recurrent miscarriages are defined as having 3 or more consecutive miscarriages. Only around 1% of all couples will have to endure this, while as many as 25 % of all women will knowingly experience a miscarriage (or even up to 75%, but without knowing, as seen in the table above.) Out of the 1% of recurring miscarriages, 50% go unexplained.

Studies have also shown that the chances of having a sucessful pregnancy are about the same after the second and third miscarriage, but after that the chances go down. It is still of course entirely possible, but after three miscarriages, couples are usually offered an examination to try to exlain the miscarriages and possibly offer medication or other help.

One study showed that the woman’s age influences her chances to conceive after miscarriage more so than whether she had suffered from one or more miscarriages before.


So what is the conclusion of all this? Miscarriages happen whether we worry or not. Most of the time, they don’t. Trying to let go of the worrying will not affect your risk of miscarriage, but it will make your life in early pregnancy happier. 🙂 (I know, A LOT easier said than done..!) If you are very worried, ask for an early ultrasound scan. If you can hold out until the 8th week of pregnancy, a live embryo and no bleeding means that the risk of miscarriage is down to 1.5%!

Remember that by the time you have a positive pregnancy test, the highest risk of miscarriage is already behind you. Isn’t that great to know? Also, regardless of your age, unless you are experiencing bleeding, the risk is already down to below 10% at around the seventh week of pregnancy.

I hope you found this information on miscarriage statistics useful. Feel free to share any thoughts by leaving a comment below.

More On Miscarriges


Tong S, Kaur A, Walker SP, Bryant V, Onwude JL, Permezel M. Miscarriage risk for asymptomatic women after a normal first-trimester prenatal visit. Obstet Gynecol. 2008 Mar;111(3):710-4.
Wilcox AJ, Weinberg CR, O’Connor JF, et al. Incidence of early loss of pregnancy. N Engl J Med. Jul 28 1988;319(4):189-94.
Allison JL, Schust DJ., Recurrent first trimester pregnancy loss: revised definitions and novel causes. Curr Opin Endocrinol Diabetes Obes. 2009 Dec;16(6):446-50.

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  • Erin

    Thank you for compiling this information. Very helpful article 🙂

  • Christina

    Yes! Maybe I can relax now, I am SO worried that because of my age (37) , that I will miscarry, when It’s a shock to me that we even conceived at all. But to know that the majority of the risk is already behind us, makes me so grateful. Ty ty ty! For sharing this info. 😀 I’m not going to be afraid to bond for fear of loss.

    • That’s great to hear! I truly hope you will have no problems at all. Congratulations on your pregnancy.

  • BSG

    Thank you very much for this information. I miscarried back in October and am now 6 weeks pregnant and trying not to worry too much. This has been really helpful, thank you.

  • J

    I had an ultrasound at 6 weeks, heart rate was perfect, everything was great, all hcg and progesterone levels were in line, no spotting, no cramping, no issues at all, went in for my 12 week appointment and the baby’s heart had stopped beating at 11 weeks and 5 days. I guess my point is that no matter how much research we do there is always a chance, worry will not help us prevent a miscarriage though either. We all just have to have faith and hope and a great support system that will help us get through.

  • Kelly

    Thank you so much for this article. As this is my 1st pregnancy at 38 I have been worried every second of the day about this. I entered my 9 weeks today and so far all signs point to good. Just so helpful to know I am not alone in the worrying.

  • Hi Kayleigh, I truly hope the spotting was just implanting, just as your doctor said. How are you doing? Spotting is difficult, It doesn’t have to mean anything, but it can. I think you are doing exactly the right thing – bothering your doctor when you feel that you need to. Crossing my fingers for you!