hi doctor...i had sex with my bf for the first time yesterday for 3-4 hours. his dick was rubbing my pussy but when my pussy got wet i found out that his dick was automatically trying to enter my vagina and touched and tried to break my virgin seal. he did not ejacuvate but i think the tip of his dick was wet. i have irregular periods..from last 3 months i got my periods on time and this time my period was due yesterday but i did not have my period. i am afraid that i should not get pregnant. can you also confirm me that if my bf's dick was just trying to enter my pussy when i was wet are there any possibilities that his sperms would enter into me??kindly suggest.also plz tell me what steps should i take to prevent this pregnanacy without harming my self and without people letting know. i am bacheolor and looking forward to get married.