me and gf had sex i used a condom but were not sure if it came off during sex or when she got off of top of me there was cum on my stomach but not on the outside of the condom and i didn't see and cum in her vagina but as a safe precaution i went and got plan b and she took it like 2 days after she didn't really show any signs just like bloating and breast tenderness and now shes liike 6 days late, is this normal or what should i do.