I stopped using depo in 2004, periods only came back may 2005, have been hoping to fall pregnant since 2004. My periods have been regular since late last year, my last one was four weeks back. Last week i started bleeding, very lightly, brownish at the beggining, then reddish but still very light. This went on for almost five days, can this be implantation bleeding? i feel so tired and sleepy lately. but a home pregnancy test tested negative, i am even planning to visit a doctor today, can a gp do a pregnancy blood test? Any one ever experienced something like this?