I know that my question is a little hard to understand so I'll explain. I masturbated in the morning around 9:45 then took a shower, I don't remember urinating in the shower and I did not urinate throughout the day. 11-12 hours later I had unprotected sex with my girlfriend for about 45 secs before I put a condom on. I know that urine cleans out leftover sperm in the urethra but I was wondering was there still leftover sperm in my urethra 11-12 hours later? And if so, since I only went raw for about 45 secs, how likely is she to get pregnant? It happened on the 14th and her ovulation calculator app says that she is suppose to ovulate on the 17th so she was fertile when it happened.

There is sperm in the early fluids, prior to ejaculation. No form of birth control is 100% effective. So, yes, pregnancy is a possibility.

First even with condoms they have a 3 to 18 percent chance of failure. So they are not perfectly safe. Also anytime without, is a danger of pregnancy.

There is no "percent" no way to say 20 percent or 30 percent. Only to say there is a chance

Interesting question. It is known that sperm can live up to 3 days in the vagina and uterus and fallopian tubes, but I've never heard of studies of how long it can live in the penis. Fertility specialists probably know, dealing as they do with testing sperm.

Pre-ejaculate contains from no to just a tiny amount of sperm, but of course it only takes 1 to fertilize an egg. And you don't know when and if and how much comes out.

People ask about odds all the time. What do odds matter? If they are very low, as they are in your case, and yet she falls into that tiny group that does get pregnant, she's still 100% pregnant.

ANY time there is penile insertion there is the risk of pregnancy. There is no way calculate the odds.