Ate Headaches And Stomach Pain After Non Penetrative Sexual Activity Signs Of A Risk Of Pregnancy?

Hey docs, my girlfriend and I were dry humping eachother a week ago both with only underwear on. And now she has had a slight headache for 3 days or so and she also just got a bit of a stomach ache. She normally will have her period kn 8 days. She thinks maybe her underwear moved a little bit and her vagina was exposed to my wet underwear. Do you think she’s pregnant?