My boyfriend ejaculated in his boxers and it seeped to his sweatpants. He wiped both articles of clothing thoroughly, but it was still wet. A few minutes later, I sat/grinded on the wet spot without any underwear. What are the chances of me getting pregnant? This happened on Day 8 of my cycle, and my fertile window is predicted to start on Day 12/13. I am not expected to ovulate until Day 19. If sperm did enter my vagina, is it safe to say that the sperm wouldn't have survived long enough to when I'm supposed to ovulate?