Cramps (Like PMS/AF)

Early pregnancy symptom

The chart

Comparison of how often this symptom is experienced by pregnant vs non-pregnant women.


After implantation (9 dpo+)
experiencing this symptom
the probability of pregnancy


Overall (during the luteal phase)
experiencing this symptom
the probability of pregnancy




About this symptom

Cramps (Like PMS/AF)

Cramps in early pregnancy are not only common but very normal. Some women feel cramping as early as implantation when the embryo attaches itself to the uterus (6-12 days after ovulation). Others may start cramping after their first positive pregnancy test as their uterus starts preparing to carry a baby for nine months. The uterus grows quickly in early pregnancy and cramping is expected.

Some women report the cramps they experience in very early pregnancy are similar to the cramps the experience just prior to or during menstruation (and some may dismiss them as their impending period). Others say they are quite different from their usual PMS or menstrual cramps, or feel like mild pressure, or quick sharp pains.

If you are experiencing any pain that does not seem "normal" or that is very painful, you should consult your doctor, especially if they are accompanied by bleeding.

Includes: Cramps that feel just like PMS or cramps you would feel during your period.


Summary of chart

An explanation of the affect on the probability of pregnancy for each day past ovulation or group of days.

0 dpo - 11 dpo

Slightly decreases probability of pregnancy

12 dpo - 18 dpo

Decreases probability of pregnancy


Detailed breakdown by DPO

Shows data for days where differences are meaningful.

Day past ovulationPregnant vs non-pregnant
10 dpo 1.2 times less (-15%)
11 dpo 1.3 times less (-19%)
12 dpo 1.3 times less (-23%)
13 dpo 1.4 times less (-27%)
14 dpo 1.5 times less (-29%)
15 dpo 1.5 times less (-30%)
16 dpo 1.5 times less (-32%)
17 dpo 1.6 times less (-34%)
18 dpo 1.7 times less (-38%)
Understanding the data

Pregnant women experience this symptom the number of times listed as often as non-pregnant. The percentage listed refers to the percentage increase or decrease between pregnant and non-pregnant.

Visit the dpo chart pages to view most common and significant positive and negative indicators of pregnancy for each day past ovulation.




What women are saying about this symptom.

OhBoyOrGirl  4 years ago
12dpo no cramps, no heavy feeling in my vagina. Nothing!

Amirah101  5 years ago
I am 13dpo and im having this pain cramps like aunt flo and sharp cramps also I have no idea of what it means. Maybe im prego or just a peri

Ava0505  6 years ago
7dpo evening and 8dpo all day cramping similar to pms cramps. Woke up with the pain. Unusual to experience on cd22, normally only on cd 27/2

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