I had unprotected sex with my boyfriend of 3 yrs and he ejaculated inside of me while i was on my period. the next day, it stopped and it hasn't came back on ever since. this was about 2 & a half weeks ago. is it possible i'm pregnant?

Unlikely.: The most fertile time of the month is about 2 weeks from the start of your period assuming that you have a period every 28 days. If your periods are shorter than 28 days, it is possible that you could have hit the fertile time. You will have to wait until you miss your period to get a pregnancy test. There is no way to tell if you are pregnant where you are in your cycle now.