Me and my girlfriend were sitting at her house, and we somehow found ourselves wanting to engage in sex, however i didn't bring a condom, so we just didn't use on and tried our best to keep me from ejaculating. we've done this before, but this time, i felt my penis throb once, and this scared me to death because i wasn't sure if i had ejaculated or not. she was expecting her period to come 5 days later, but she's irregular, and she's already passed her ovulation period, because the last time we had sex (2 weeks ago) she was producing a ridiculous amount of fluids, which is the "Sign" that she is ovulating. I'm just scared to death she might be pregnant.