PLEASE HELP PREGNANCY!?

[Daniellemeber]

Hi there so heres the story:
Im am 18 years old about to graduate high school, on may 13 2016 i had sex for the first time around 7:00 pm, my last period was MAY 3-8th SO IM NOT REALLY SURE WHEN I WAS SUPPOSE TO OVULATE which is KILLING ME BUT ANYWAYS im pretty sure he didnt ejaculate inside me Because he only tried to put it in like 2 or 3 times, anyways so the next day bought plan b around 9:00 am (sorry if its tmi) anyways after taking plan b a week later may 19 i had a light/regular period you could say lasted around 4-5 days it was 2 weeks before my expected period, after that i went to the gynecologist 3 days later and explained to her what happened she told me i wasn't pregnant because of the pregnancy test they did which made me feel better but i still think that maybe it was a little too early to know? Ive had had my periods since then meaning i had my period june july and august but my august period only lasted 5 days when it usually lasts 6 days which really worried me im really really paranoid and concerned i could be pregnant even if i had had my periods and took plan b, ive experienced some nausea and breast soreness( i think from touching them so much??) but really hope someone can help me to answer my questions
Your comments and responds would be extremely helpful thank you sm! God bless

[Mo]

Hi there, here's the link I sent you in chat today in case you need it again: http://www.scarleteen.com/pregnancy_scare_resources