what is this?

Hey guys so I was masturbating earlier and when i 'finished' i noticed there was like a thick white discharge coming out of me? I don't think I've ever had this before (but i also have never had such a successful session lol)

Anyways, my question is was it cum? I've heard that girls do produce it but Idk what it looks like. So i was just wondering if it was cum or just like dishcarge?