Today (20 days past my first day of my last period), my boyfriend and i played around, for the for first 20 mins or so, we just had dry rubbing (with undies on) and stopped and 40 minutes after we played again, just rubbing and playing with our "things" and after a while i went on top of him but our "things" are not that close and the tip of his thing was not that close to my vagina, and after a while he decided to put on a condom and we didn't have "intercourse"( just slight intercourse and rubbing) and we only did it for like 20 mins and remove the condom and washed our hands, we even checked the condom and there were no leaks or damage and he didn't even ejaculate. Should i worry about pregnancy or not?
*and also i had an ultrasound last month and the doctor said that i have a retroverted uterus that means its harder to get pregnanct but still could get pregnant.