Can you get pregnant without having a period for 3 months

Yes, although it's not very likely. If you have sex without using contraception, you can conceive (get pregnant) at any time during your menstrual cycle, even during or just after your period.

You can also get pregnant if you have never had a period before, during your first period, or after the first time you have sex.

There's no "safe" time of the month when you can have sex without contraception and not risk becoming pregnant.

But there are times in your menstrual cycle when you're at your most fertile, and this is when you're most likely to conceive.

Understanding your menstrual cycle

Your menstrual cycle begins on the first day of your period and continues up to the first day of your next period.

You're most fertile at the time of ovulation (when an egg is released from your ovaries), which usually occurs 12 to 14 days before your next period starts. This is the time of the month when you're most likely to get pregnant.

It's unlikely that you'll get pregnant just after your period, although it can happen. It's important to remember that sperm can sometimes survive in the body for up to 7 days after you have sex.

This means it may be possible to get pregnant soon after your period finishes if you ovulate early, especially if you have a naturally short menstrual cycle.

You should always use contraception when you have sex if you don't want to become pregnant.

Further information:

  • Can I get pregnant if I have sex without penetration?
  • Contraception
  • Periods
  • Emergency contraception
  • Natural family planning
  • Pregnancy guide
  • Baby guide

Page last reviewed: 8 July 2021
Next review due: 8 July 2024

Last month pro runner Tina Muir published a kind of shocking blog post about her decision to quit running. Like many elite athletes, she'd lost her period due to strenuous physical activity. Now that she's hoping to have kids, she's leaving her sport in order to regain her cycle.

Every time she went to the doctor, Muir was told she'd have to train less intensely if she wanted to get pregnant, she said to Glamour. The prospect of scaling back her running seemed inconceivable, since her career was so important to her. But after she accomplished her dream of representing Britain in a world championship, she was more at peace with the idea. "I noticed that my heart wasn’t really in [running]," she said.

So she began the process of trying to get her period back. Stress, calorie intake, physical activity, and weight can all affect your cycle; for Muir, the main culprit was running. "They suggested I severely cut back, and that would be OK, but I've always been an all-or-nothing person," she said. "If I was going to do this, I was going to do it completely." She was told she'd get her period after two to three months, and though the competitor in her wanted to rush it, she has accepted that her period hasn't returned after seven weeks and may not for a while.

Not every woman who loses her period (the medical term is amenorrhea) is an elite runner, of course, but if you're not menstruating and you'd like to get pregnant in the near future, you should talk to your primary care doctor, a gynecologist, or a reproductive endocrinologist, says Alison Zimon, M.D., a top reproductive endocrinologist and co-medical director at CCRM Boston. Even if you're not trying to get pregnant, losing your cycle can indicate that something's wrong. Usually it's due to some reversible issue, such as excessive exercise, dieting, or stress. Once this underlying problem is treated, your cycle will often return.

(There are some contingencies: If a woman's cycle doesn't come back, doctors will sometimes prescribe birth control. If you're trying to get pregnant, obviously, that won't help, so in that case, women might take injectable gonadotropins or other medications. Others can't get their periods back or get pregnant because their egg supplies have run out; these women may use donated eggs.)

Once you do get a regular period again, that means you're ovulating and have a good shot at getting pregnant, says Brian M. Berger, M.D., a reproductive endocrinologist at Boston IVF. It may also be possible to get pregnant before your period returns since ovulation happens about two weeks before menstruation. After that, Berger recommends trying to conceive for a year if you're under 35 or six months if you're older than 35; if you aren't pregnant in that window, talk to a gynecologist or reproductive endocrinologist.

Muir is speaking about her journey from amenorrhea to trying to conceive because she wants other women who have lost their periods and want kids to know they should address the problem as soon as they can. She also wants them to know they're not broken, as she used to believe of herself, and to feel free to talk about it.

Last, Muir wants to reassure women who may need to gain weight so they can ovulate that there's nothing wrong with that. "That has not been completely easy in a world where were constantly being told to lose weight, lean up, and tone up, but I feel almost more confident now than I did at my leanest, when I had a six-pack," she says. "It's so liberating to be able to remove yourself from those restraints and the pressure to look a certain way. I want to do what's best for my body and me."

Can you get pregnant if you haven't had a period for 3 months?

Even if you don't have periods, you could still get pregnant. You may not know what caused your periods to stop. Possible causes include pregnancy, hormonal changes, and losing or gaining a lot of weight quickly. Some medicines and stress could also cause it.

Can I still ovulate without a period?

You may ovulate without having a period, or you might have a light period. You also may ovulate without periods if your ovaries release an egg between 12 to 16 days before you expect your period to begin.

What happens if I don't get my period for 3 months?

The most common cause is pregnancy. However, amenorrhea may also be caused by various lifestyle factors, including body weight and exercise levels. In some cases, hormonal imbalances or problems with the reproductive organs might be the cause. You should see your doctor if you're experiencing amenorrhea.

Can a woman get pregnant without monthly period?

Yes. Although it's uncommon, it's possible for a woman who hasn't yet had her period to become pregnant. That's because young women ovulate — release eggs from their ovaries — before they have their first period.