Hi, I am 21 and I have a 15 month old son. I have been on birth control for 14 months now. All of a sudden I have a black stringy -period like- bleeding with slight craps. it has been 3 full days since this started. And my period is not due for a week and a half. there isn't a strong odour or anything, its just really dark and stringy. Should I be worried? I have been regular the whole time after the pregnancy and being on the pill. Could it be from stress? or could it be a pregnancy with something wrong? I haven't missed a pill, and am extremely faithful to what time i take it, but my son was the result of tri-cyclen-lo and condoms, so i DO know its possible to get pregnant on birthcontrol.... Either way, should I make go to a walk in clinic? (as the wait for my doctor is months....)