So about a month ago, (June 10) i had sex with a guy in a pool (my first time) for about 5min. We had unprotected sex. I know it was stupid, but we was really dumb. he said that he didnt *** and that he would have knew if he did. 3days later, my period came on (june 12). then about 2 weeks ago, i took a pregnancy test. It said "Not Pregnant". so i was at ease for a moment. then about 3 days ago, i took another (july 11). Again, it said "Not Pregnant". It is now tuesday (july 14) and my period havent came on yet. I know i have more issues being that i might have a STD and/or being prenant. but no one knows about this excpet the girl that had sex the same time and place we did wit her bf,...and the guy i had sex wit, and my best friend. they all say that im not pregnant. i really dnt wanna tell my mom (i know i cant tell my dad) because she really trust me and i dnt want to ruin that. i would brake her heart if she even knew i thought about havin sex. i have a family history of people gettin pregnant. such as my sister. she got pregnant when she was 14 ( the age i am now) and had her baby at the age of 15. she is now 25 wit 4 kids. do you think im pregnant? and should i tell my mom everything? or only that i had sex and want to go to the doctor? or tell her that i want to go to the doctor without tellin her a single thing? or dnt tell her at all? please dnt judge me when u read this. Just please help me out!!!