I had intercourse with a girl. About two hours before, I masturbated, took a shower and washed off, and urinated. Two hours later when I went to put the condom on, there was precum on the tip of my penis. I accidentally tried to put the condom on the wrong way, and then flipped it over and still used it (I  know that that is a mistake, I wasn’t thinking at the time). I then had intercourse, and did not ejaculate. I am worried that there may have been sperm in my precum from the ejaculation before, that survived washing off, urination, and being in the air for about a minute before touching the condom on the side that I then flipped over and went inside her. I know there is always a risk, but what are the chances my live sperm did get inside her?