i had sex with my boyfriend at the time. We had sex for about 30 min to an hour about and I got ontop and rode him for a bit. He still did not cum, also he had a condom on. A few days after or about a week I had gotten my period or that month, it then followed into the next month. This is the month it followed into. Its almost the end of the month and I still have no period. It seems to me that I have been eating alot more then normally. My nipples hurt not my breast just my nipples. Also, I have no nausea, or dizziness. But, I have been a bit more tired. Please please please help me! Im really scared....