My period has been MIA for 3 months now. my last period was at the end of june. my partner and I are trying to conceive so no period is very frustrating. I've taken a pregnancy test each of the three months and all of them have been nagative. so I was wondering if anyone could help explain why I'm not getting my period. my symptoms include having to constantly pee, pelvic pain, random back pains, neasous and upset stomach (bad digestion), now also bad migraines. if anyone has any ideas I will gladly look into it. thank you.