It is common to feel cramps, lower pelvic, or abdominal aches and pains during the first three months of pregnancy. Frequently, this discomfort is usually caused by stretching of the ligaments that hold the uterus in place, pressure on the bladder, and other pelvic structures.
This is normal as long as you’re not having fever or bleeding, and it usually passes in a short time.
Some discomfort can be caused by the position of the baby.
Try laying down for short periods of time with a heating pad on your back ( never the abdomen), or taking Tylenol.