I am 15. My boyfriend and I were fooling around. A few weeks before i let him see if he "fits" inside me. The night we fooled around, he entered me and we had unprotected sex for 45 seconds. He didnt cum inside me but there was a whiteish fluid on my anus. Both of us are unsure about who's it was. Its been a day and i have a really weird feeling in my bowels and I am really worried if i could be pregonant. Also lastnight, around 8:30, i got really tired. My next period should be on the 16th of November. Please help me, i am in my sophmore year and i dont want to be pregonant, and i especially cannot tell my parents.