Me and my gf had a worry about pregnancy after having oral sex 15 days back. We didn't have any intercourse, you just rubbed my penis over her. The point where we worried was before rubbing, I had ejaculated 30 mins before n I didn't wash my penis after that n we slept. N again after that I rubbed my penis over her vagina n I even tried to put my penis inside her but I couldn't cuz she wasn't ready. So we were scared that by that pregnancy is seen or not. She missed her periods too, she had to have it on 14 may n it's 19 n still she didn't get. So in worry, we checked through pregnancy kit n she found it was a negative n even she did Body check up after that thinking if it's a thyroid problem or what. But the check up shown all well. We are scared why still she didn't get periods. Hope she's not pregnant. I told her to do again test by pregnancy kit. Please help us to know what's the problem n how to avoid it.