Ok, so my boyfriend and i were having sex about 4 weeks ago and he cam inside of me.. we didn't know the condom broke! a piece of it went in side of me and i peed it out a few days after, do you think that there's a chance that i could be pregnant? cause

Yes, possible: If you had sex and the condom broke, then there's definitely a chance that you may get pregnant. Also, if it has been four weeks and you haven't had your period, you should think about a pregnancy test. Keep in mind, also, that a broken condom (or any unprotected sexual contact) also places you at risk for sexually transmitted diseases, so you (and your partner) should get tested.