Pregnant?

Ok, listen up, I’ve done a bunch of research and I’m so confused. I obviously understand how pregnancy works but can sperm like swim through clothes? Many websites say it’s possible but highly unlikely to get pregnant. Idk what to believe because I keep getting mixed messages! What if a fabric was saturated with sperm and touches the outside of your vagina or somehow gets pushed in?! I know this sounds silly please don’t be rude I’m young I just am trying to understand