Just had a period not heavy not light. But I'm having extreme night cramps usually about 2am. Had these cramps during period and still having them after.. took pregnancy test negative result. Have never had cramps this extreme waking me up and lasting 30 minutes to a hour. Could this be a sign of pregnancy?
Yes, it could be a sign of pregnancy. Even though you received a negative pregnancy test, it may have been too early to tell. The cramps could be related implantation. They can sometimes be very painful. I recommend another pregnancy test in about 7 to 10 days.