Can you be pregnant and still have a period?

Stories of women who did not know that they were pregnant until giving birth, are all over the internet and have become sensational, even sparking a national television series. For many couples who are trying to conceive this leads to the hope that it could happen to them too. The question about whether or not one can be pregnant and still experience a period is examined in more detail here so that those trying to conceive are not misled and given false hope.

What Biology Says

According to a resident obstetrician at Baby Centre, the definitive answer is a resounding ‘no’. Once a woman’s body begins producing the hormone human chorionic gonadotrophin (hCG), which is commonly known as the ‘pregnancy hormone’, her periods will cease.

What Looks Like a Period Could Be Something Else

Many women mistake a period for breakthrough bleeding, which is a common occurrence during early pregnancy and normally happens at about the same time a woman’s normal period would have been due. Even though there isn’t a con census amongst experts about why this breakthrough bleeding occurs, it is generally attributed to the hormones, which control a woman’s menstrual cycle, which begin to flood through her body once pregnancy begins.

Bleeding could also occur once the fertilized egg settles into the lining of a woman’s uterus, typically between 6 and 12 days after ovulation and fertilization, – this is called implantation bleeding. As a result, most medical practitioners simply refer to this as another form of ‘breakthrough bleeding’.

The American Pregnancy Association explains that although pregnant women can experience light infrequent bleeding while pregnant, the bleeding shouldn’t resemble their normal period. Some women do mistake this bleeding as a period as it often occurs around the same time that her regular period would take place.

This irregular bleeding, or spotting, that happens during pregnancy is usually either a dark brown or a light pink color. The amount of blood should not fill tampons or pads over a few days. However, if this is the case, then it is safe to assume that it is a regular period after all.

Conception While on Birth Control

Every woman, especially those with no desire to get pregnant, will have heard at least one ‘horror’ story of birth control pills failing to prevent pregnancy. The most common causes of this are not taking the pill regularly (that’s why doctors recommend a daily routine) and antibiotics interfering with the pill (one should ALWAYS use additional protection when on antibiotics). Studies have proven that women who do get pregnant while taking the pill have more chance of experiencing intermittent bleeding while pregnant. This is normally why pregnancy comes as such a shock for couples involved.


Women who are concerned about bleeding while they are pregnant should always go straight to their doctor or midwife. Often, it is nothing to be concerned about but it can also be the first symptom of a miscarriage – particularly in the early phases of pregnancy. Bleeding which is associated with miscarriage is normally accompanied by painful cramps and bleeding. If anything is wrong, the doctor or midwife will be able to assist and help you determine what your next course of action should be.

Finally, women who have irregular periods should always consult their doctor before beginning to worry. Stress factors and a bad diet can greatly influence a woman’s menstrual cycle and bleeding. This should be taken into account from the outset, as it could be something as simple as miscalculation that leads to the assumption of pregnancy.

Works Cited:

  • Ashley

    i started my period 16 days late it looks like a normal period but ovulated last Week and had un protected sex is it possible that i could be pregnant

  • Sarah

    I had unprotected sex 2 days straight in august a week before my cycle. I did get a cycle for august but I am now 4 days late. Could I be pregnant ?

    • Did you have a period in September? If so, sex in August most likely would not present as pregnancy now. Did you take a pregnancy test?

      • anne d.

        i got my period 2weeks before my expected day, but this period is very diff. With my regular flow, This was happened yesterday and only i can see spots like dark brown…. do i have to see a doctor?

        • If you are getting negative pregnancy tests, and your flow is off, then you should probably make an appointment to talk to your doctor.

  • Ashle

    I had unprotected sex with my bf on the 11th of October, it’s 4 days before my next period. I waited for it but it didn’t come during my expected date which supposed to be on the 14th but it came on the 24th. It lasted for 5 days. This was the first time I got my period very late than normal. At first I was thinking if I am pregnant coz sometimes I experience light cramps and backache. In this case, is it possible to be pregnant?

    • It’s not likely as your period did arrive even though it was late. Have you taken a pregnancy test?

      • Ashle

        No I haven’t taken a test. But I am just wondering why my period came very late for the first time.

  • linda ameah

    i had unprotected sex this month and my period was late for two days and it finally came but the started from brownish to red and it was reduced can be pregnant

    • Take a test and find out if it is positive. If not, then you were most likely not pregnant.

  • piper

    I need help one week before period thought i had implation bleed 2 days brown spottinh n only when wiped 2 days late and i came on period only for 2 days thou light period cud i still be pregent or just hoping i am?

    • It’s possible. Did you take a pregnancy test?

      • piper

        Yeah the day i came off n it sed negative got lots of symthons maybe its just in my head

        • If you next period is odd as well, you might want to see your doctor to find out what is going on with your system.

  • Erica

    I had my youngest child by c-section five years ago & had my tubes tied during the c-section after my daughter was out. But now my husband & myself have noticed my breasts have become extremely enlarged along with my nipples (plus I have noticed what appears to be breast milk coming out), I have been eating a lot more than I normally do, plus I am getting a little bump on my stomach like I id with my first two children. All of this is making me & my husband think I’m pregnant but we are stunned because we know my tubes are tied?!? Plus I have been getting my period on time every month & nothing has changed with it at all!!! Could I be pregnant? Could it be a tubal pregnancy?

  • Yoana

    I had unprotected sex two weeks ago and I spotted for 3 days and half in a row pinkish then brownish and it was around the time my period was due. I took a pregnancy test on the actual day my period was due and it came out negative. I still have mild cramps… Can I still be pregnant?

  • riktan

    I had unprotected sex on march. On august, I had my period for 2 days instead of 7. I got some test kit, they said, negetive. But my cycle is 33 days.. but yesterday I had my period started. What is this, I can’t understand. Can I still be pregnant?

    • If your period started, then the possibility of you being pregnant is pretty small.

  • Samantha

    Me and my fiance have unprotected sex on a regular basis. I’ve had nausea, cramps, headaches, cravings, mood swings a d light headedness. I started bleeding later than mg period that was very light for two days. Then it stopped and then started again? I don’t know if I should be worried. I took two pregnancy tests today and they showed up negative. You can feel something in my stomach. Am I possibly pregnant? Please help.

    • Unfortunately, there is no way I can guess. You really should go and see your doctor if your period is changing and you are feeling something in your stomach.

  • Fay Bradley

    I had a period 17th july. Thwn missed one in august completely never have irregular periods. Ny nost fertile days were 28th august to the 2nd of september and had unprotected sex each day of that as we are trying i then on the 6th got my period. Whats the chance i could be ??

    • Christina

      I have a question i have been having sex with my boyfriend before having my period and i know am pregnant and now that am my period could i not be pregnant because am on the period cause am not on birth control

Last modified: April 11, 2014