It occurs anywhere from six to 12 days after the egg is fertilized. The cramps resemble menstrual cramps, so some women mistake them and the bleeding for the start of their period.

What does early pregnancy cramping feel like?

Once you become pregnant, your uterus will begin to grow. As it does this, you'll likely feel mild to moderate cramping in your lower abdomen or lower back. This may feel like pressure, stretching, or pulling. It may even be similar to your typical menstrual cramps.

How early do stomach cramps start in pregnancy?

Symptoms typically appear between 4 and 12 weeks of pregnancy and can include: tummy pain and bleeding. pain in the tip of your shoulder.