I had my last period on dec. 30th and it lasted 4 days but I was still spotting for a week after and it was really light. Since then I've had horrible abdominal pains and lower back pains to where I had to just stop what I'm doing and try to relax. My next period is supposed to be on the 26th but I'm wondering if I should take a test or go to my dr and let him check me out