Worried about squirting.

I've recently started having sex about a year ago, and I've never orgasmed. It's not that the guy isn't good, it's just that I'm terrified I'm going to "squirt". I don't know what it feels like, but mostly it just feels like I really need to pee before I say stop because I don't want to pee in the middle of sex. But Everytime I go to the bathroom after, I never need to pee. Am I about to squirt? Or have an orgasm? Can someone explain to me what's going on?