Im 17 years old. I had my period about May 31st, My boyfriend and i were acting sexual on June 11 (which i believe was near the time i was most ovulated) he insert himself in me for a couple seconds but did not came inside me. He mentioned "pre-came" so i took next choice within 10 hours just to be sure. We did the same thing on june 21 and 23, only for a couple seconds and did not come close to going inside me. I decided to take another next choice just in case but the following day (sunday) i experienced bleeding as if from a period. I heard it was common for bleeding within a week after taking the pill but i also heard of implantation bleeding and im not sure if it might be that or an early period even though i had it about 2 and a half weeks ago. Is it possible i might be pregenant or is this normal?