I hooked up with my boyfriend for the first time and we were fooling around. He ejaculated on my chest. I wiped it off first and then hopped into the shower. I am worried that maybe the sperm washed down with the water to my vagina and may have gone into me. Is this possible that I could be pregnant?
It's very unlikely.
Sperm are fragile. The, air, soap, and water would likely kill most of them.