Let's talk about sex 👀

Might be a dumb question but the only way to get pregnant is during your fertile window or ovulation right because I've read if you have sex during your fertile window that sperm can live in you for up to 6 days so once you ovulate it could still be in you and you're pregnant I've heard a day after ovulation as well the egg can survive 12-24 hours but other than that you're fine right just wanna make sure I'm educated