My bf has a confirm in an put his penis on my vagina but not in it my period was 5 days ago he did this 4 and now I'm bleeding agAin what could this b?

A bit unclear. Does this mean your boyfriend had a condom on? Nonetheless, vaginal penetration with or without a condom, can lead to irritation of the vaginal vault or cervix that can lead to bleeding, though 4 days later would be a bit atypical. If he had a condom on an STD is unlikely though if you've had an exposure prior, sex could have exacerbated things. Consider an eval by your PCP for better guidance.