Did I squirt?

✨Elizabeth✨ • 20, college med student
So I have never had an orgasm from vaginal penetration alone, but the other night during sex I felt something. (Hopefully this makes sense) I felt something "fill up" with liquid inside my vagina and I felt it come out while my SO was thrusting fast and deep. It felt good but I just don't know if this is squirting or what. I know o didn't have to pee, it didn't feel like my bladder was filling up. It was different.