Just because your period takes a nine-month break doesn't mean some of your familiar symptoms won't continue. Abdominal cramps are usually a mild ache or pain that can occur at any time during pregnancy.
What is the reason of this?
Some abdominal cramps during pregnancy are the result of your growing uterus putting pressure on and lengthening the muscles and ligaments that surround it. This is also known as round ligament pain. Other types of abdominal cramps may occur as a result of the contraction of the uterine muscles as the uterus enlarges. Abdominal cramps that persist or go in waves as the pregnancy continues, especially in conjunction with other warning signs, can be a sign of preterm labor.
Tips
Cramps can happen when you change positions or physically push yourself too hard. Try taking a warm bath to relieve painful areas. Symptoms such as cramps are very common due to the baby growing in your womb. They will stop after giving birth.

