have had a realy weord three day period, then all was fine for about a wek then i got this pink discharge and shortly after that brown discgarge, three days later at night i must have had some kind of pinky red fluid but i thought nothing of it(thinking i was getting my period again) which would also not be normal(i have periods like clockwork) then i get this really red heavy bleeding(also not normal) and four days later it is still so heavy im changing my tampon every hour. Along with all of this ie had cramps(which i get pretty bad anyways) and severe lower back pain. ive also had small i suppose about thumbnail size clots tht look like a bunch of clots all together. Now i did go to the hospital last night and they said i didnt appear to be pregnant and all seemed ok, they just think i have gotten my period early due to stress or something, now my concern is that the bleeding is still continueing in a really heavy and weird manner, it seems to have gone away and then i feel this like wosh kind of deal and there is blood everywhere even with my tampon in. im worried i might have thin liineing or something, that maybe the pregnancy ended before it could start and that i wont be able to be pregnant or something like that. any advice or help or anything?