hi according to your statement the cum leaked from the bottom of the condom on your hip. generally this is not a cause for worry. however if some semen might have leaked while you were inside her without you knowing. some antibiotics weaken the effect of birth control. so it is better to go for plan b. don't use a used condom as they become loose after sometimes. get a new one each time.
if we cont to have sex with a used condom for a few strokes and some cum leaked out the bottom on my hip is she pregnant. the condom didn't break i made sure by doing the water test. and she has been on birth control but has been on antibiotics for a week. then stopped taking the antibiotics 2-3 days before our sex. should i get plan b?