TMI!!

this may be a dumb question, but how long does sperm stay alive outside of the vagina (ex. my belly, butt)?

my boyfriend pulls out and usually cums on my belly, butt, etc. i wipe it away but i’m worried that there’s still some sperm there.

when i take a shower, is it possible/likely for the remaining sperm to go into my vagina with the water and get me pregnant? Probably a stupid question but it worries me everytime😂😂