Yes this is very normal to have crampings in abdomen in pregnancy
One of the first changes to occur in the female body in preparation for the new baby is the release of additional female hormones like estrogen
. These hormones tell the uterus
to expand, among other messages to the female body. Once the uterus begins the growth process, the mild pregnancy cramping may occur.
As your body prepares for it's new baby your uterus will stretch and expand. The ligaments that support the uterus will stretch and with this stretching may cause mild cramps.
You need medical assistance if there is associated bleeding along with cramps.In such a event you have to consult your doctor.