Sperm? How long does it live? Sex positions?

Ok so I know this is crazy but if you have sex in the shower can you still get pregnant ? I've been ttc my first child and I've heard a lot of myths about having sex in the shower or being on top that you cant get pregnant and I'm ovulating but we had sex in the shower is there still a chance of me getting pregnant? I'm just worried that we missed our chance for this month