I am 17 years old and me and my boyfriend experimented on dry humping in my house.My boyfriend was wearing boxers and underwear while I am wearing my underwear leggings and mini shorts. Then we continue to dry hump. we are grinding and I don't think he pre-cm but he ejaculated inside of his underwear but it is near and close to my vagina. I am wet due to the hot stuff that we have done. I am scared that I might get pregnant and try pregnancy test and the results are negative and it almost 3 days since we have dry-hump/grinding. Our private parts were in almost 5 layers of clothing and also afraid the sperm/semen could seep through in my underwear when I am wet. Is it possible that I might get pregnant? I am craving for food mostly carbs right now and having backaches and head aches please help.