squirting or pee?? 🤷🏼‍♀️🤷🏼‍♀️

Everytime me and my boyfriend having sex or his fingering me, I have this urge that something wants to come out. Idk if it's pee or if I'm going to squirt so I hold it, it would be embarrassing. I have talked to him about it & he wants to make me squirt but idk what could come out. How do I know the difference? Or what do I do to squirt