I had sex with my bf and he didn't used condom but when he feels that the he's coming out he stopped is there a posibility i got pregnant?

Unreliable: Pulling out during unprotected sex is no guarantee that some sperm did not enter the vagina making it possible for pregnancy to occur.

Yes: There is sperm in the "pre-cum" fluid, the risk of pregnancy is lower but it is still there. There is also the risk of not withdrawing in a timely manner. You should consider a second form of birth control to significantly reduce your risk of pregnancy. Also be aware that no form of birth control is 100% effective. Also only condoms will protect against sexual transmitted infection.

Yes: The withdrawal method is very unreliable for preventing pregnancy, as sperm may be present in the pre-cum. Whether you are pregnant depends on where you were in your menstrual cycle. Plan b, the morning after pill, can be taken up to 72 hours after an unprotected encounter to prevent a pregnancy, and should be available otc. If you have already missed an expected period, do a pregnancy test.