Seriously? Very unlikely, but humans have had stranger things happen to them. You did all you could, so now its a waiting game. Check with the easy EPT in a couple of weeks. If you are by some miracle pregnant, don't get an abortion. I have met many women who had abortions. I have never met one who didn't say that it was a mistake. They all would have had the baby if they knew than what they knew later. That's a haunting experience you can never escape. If you ever get pregnant, find a way to have the baby. You would be better giving it up for adoption. Later in life you may want to connect.
I wouldn't worry though.
In the future, be careful. Get on birth control or keep condoms with you. Carry the regular, large, and XL. If they don't fit your man, they won't do much good.