i am 18 years old, and i had sex with my boyfriend for the first time. we did not use a condom but he withdrew in time, but i still felt a little uneasy about the whole thing cause some of his semen dropped on my inner thigh and places around my anus. I used an emergency contraceptive pill after an hour of intercourse. i also suffer from irregular periods, as my gynecologist says "not a classical case of PCOS, but slightly enlarged ovaries". i am scared that i might get pregnant!!! also, when should i try a home pregnancy test, as i am not always sure about when i would have my period. also are these tests always correct??? please help me!!!