I've been off my birth control for like a month or so. I had sex twice (11 & 12 days ago) while I was ovulating. I've been tired lately. I had like a pinkish brown spot of blood 2 days ago & another one yest. Could this be a sign of pregnancy / implantation bleeding or just an early period. I'm not expecting my period til next thurs and haven't had anymore bleeding. How.long should I wait to test? I just want this so badly.