I and my boyfriend were dry humping. I had my panties on and he, his jeans. Although he said that he didn't ejaculate, there was a spot on his jeans and on my panty too (both on the outside and the inside). Around 15-20 days have passed since this took place and I didn't get my period this month. Also, I feel more thirsty than usual which, I have read, is a sign of pregnancy. I am really very worried about it. Please help me. Is there even a slightest chance of me getting pregnant?