I have always always been irregular. Over the last year and a half i have been very regular. In July me and a guy messed around we did not have sex. He did *** on me. I didn’t think much of it. I had just got off my period when this happen. Well august come but my period didn’t. I didn’t mind i was busy busy busy and didn’t mind... Then sept. come around and i had a very light 10-12. Then october came and i bleed less than before 5-6. and i haven't have had a period sense. I took a pregnancy test yesterday and it come out negative. I have had nausea and i have to pee probably 10 times a day i have only gained 13 pounds though i have all ways been on the large side but my stomach i getting hard i thought it could be the intense work outs in August at school that made me irregular and made my stomach hard but i started walking instead of working out and its hard. My back hurts my feet swell a lil and i have been having light headedness and i have about passed out a few times... Idk what could be wrong... can u help?