HI, I have did dry humping with my boyfriend wearing the underwear. He was in his underwear as well. He did not ejaculate and there was absolutely no penetration. I washed my vagina properly after the activity. I did not take any contraceptive pill. I got my periods that very day after 2 hours. My periods lasted for 6 days. However m still anxious regarding pregnancy as it is paining a lot in the pelvic region after the end of my periods and I am urinating a little more than usual. Is there any chance of pregnancy?