I had sex with my boyfriend and after i entered his sperm from out of the condom into my vagina can i get pregnant?

Not Ethical choice : If sperm is in the vagina then pregnancy is possible. This is very concerning behavior. I assume that since condoms were used then his intention was to avoid getting you pregnant. Using his sperm without consent is very dishonest and cruel. Consider using Plan B to avoid pregnancy. Consider speaking with a counselor to discuss your current situation & gain insight on changes you could work on.