I haven't had a normal period since i have gotten off of my birth-control years ago. also i had gained alot of from my first and only pregnancy and that was in 2005. I have recently started exercising pretty regularly these past two weeks we are talking about pretty heavy exercise so i can loose my weight and become more healthy. my gynecologist had told me that i wasn't ovulating that is why i hadn't had a period. well all of the sudden since i have been exercising i started my period at first a brown blood discharge then blood clots sometimes super heavy like bleeding through super tampon and out onto pas and some days nothing at all. Is this normal? could i be having all of this bleeding for almost 2 weeks now because i haven't had a regular period? I took a pregnancy test this morning so i know i didn't miscarry a unknown pregnancy or something like that. Is it safe for me to continue exercising?