Last month I Got My period On April 15-20. I had sex with my boyfriend on the 26 twice. The first time, I made sure he wore a condom and the second time, I didn't see. It's may 19 and I still haven't gotten my period. I been thinking about this so I'm so worried. i think i have irregular period since I get it sometimes in the beginning then it switches to the end, etc. I'm still a teen (17) idk what to do. Am I pregnant? !