I and my girlfriend did dry humping 12 days after her last period, i had no underwear and she was wearing shorts and underwear when we humped. I did not ejaculate but she was wet and we did it for just 2 minutes but now she is having headache,diziness and nausea can it be because of dehydration or stress because she has her exams or her ovulation period. she did drink alot of water after that and she is really freaking out. can she be pregnant? Thank you