My Bf And I Had Sex Twice Today. The First

my bf and i had sex twice today. the first time without a condom and he didnt ejaculate inside me, but finished himself off afterwards. the second time with a condom for about a minute or so before we saw that the condom broke (he didnt ejaculate). should i take the plan b pill/ am i pregnant? im scared there mightve been left over sperm on his penis that might have entered me..