Hello everyone, I will be straightforward and brief. I masturbated at around 9am and had sex with my girlfriend at around 8pm. I took shower after first masturbation and took shower before that sex, but strangely I didnt piss after that masturbation (so I didn't piss for all day, around 11 hours, I don't know why) and I was reading that if you dont piss after ejaculation some sperm will be still there as penis wasnt cleared from that sperm by urine. We were using withdrawal method, I insisted her to use condom, but she refused and I stupidly agreed, which I shouldnt, but that is not the topic. It was already around 1 year and 3 months after she stopped pregnancy prevention such as plasters and injections, because it made her feel not good. Before we used withdrawal method around 30 times and pregnancy never occurred, so maybe my pre-cum doesnt sperm (I was reading only around 20% can breed with their pre-cum). She was at her last days of period at that day, I didn't cum inside her and I didnt drop any semen on her private area. So what are the possibilities of making her pregnant by that? Thank you very much for help.