Okay so I want to know if I should be concerned about getting my gf pregnant. The other night, we were dry humping. She was laying on top of me with nothing on while I only had on some polyester nike gym shorts. I was rubbing against her clitoris area but don t think I was near her vagina. I ended up ejaculating. I noticed that semen had gone through my shorts (or what appeared to be semen) so now I am worried. I pulled up her pajama pants as soon as I ejaculated so I am not actually sure if any even touched her vulva/vagina area. I just want to know if there is cause for concern. She was also on the second day/night of her period and she had a tampon in. She has a regular approx. month long cycle too. Should I be worried? What about what I ve heard about pre-cum ? I ve also heard sperm can t survive going through a layer of clothing. Thanks for the multiple opinions!