Ok im 17 i am sexualy active.Oky i missed my period for about 3 monthes before this i was reguler all the time.I thought i might be preg so i toke home test and it came negative all 6 times.WEll in october i got my period Oct 26-nov 8 oky and nov 18 i started spoting like really light by the 20 it was a period it lasted till Dec 16. well last nite i had the worst pain in my stomice it hurt so bad my lower back hurt as well i was sleeping and woke up from the pain i drunk lots of water and i tryed walking,lying on the floor,sitting up. the pain was so bad.It eventualy stoped after about 20min.Also every seance june when my period stoped i feel sick alomost all the time.Another thing i go to the bathroom continuesly.Please someone help.