Hi.. I m 16 and I have been on the pill for about 4 months now. usually i always get my period right when the little peach pills start, but about 3 days ago i had some spotting ( it was brown). It was darker today and there was more of it, i am sexually active, but I don t think that it is a sign of implantation bleeding . I know that sometimes the estrogen levels on the pill can start to waver and you get break through bleeding, is that what it could be ....? Thank you for your time.