Hospital

I was 20yo when I was hospitalized for 1 week because of an ectopic pregnancy. They kept me there because I had a high temperature.

Anyway, I met one of my old classmates there and we spent the last 3 days in the hospital fucking in different rooms and on the roof terrace. I was so horny that I didn't care about my bf at all. We also had very risky sex in the corridor when he pushed me against the wall and took me from behind. Or when he pushed me naked against the window and you could have seen my tits...

I went to the hospital to have a failed insemination reversed and came out pregnant.
How do I know that? My bf only used condoms after that incident, only my classmate didn't...