Just started taking birth control (monophasic nortrel) for the first time ever about 5 weeks ago. I am 18 years old and had debilitating menstruation and cramping and did not want to have a period anymore. In the week that I was supposed to take the inactive pills, I skipped to a new pack and continued with the active pills and began spotting last week Saturday (10/18) night. The light bleeding and cramping has continued up to now. I haven't missed any pills, but I have taken the pill at a different time (1-2 hrs later) at least twice during the whole pack. I read that spotting is normal, but I am concerned about the length of time it has lasted. What might have caused this, and when should my concern lead me back to the doctor?