orgasm

i read something about overstimulation and not being able to continue, that’s a thing? because whenever i masturbate i notice that i start to rub a ton when i’m climaxing, but i have to stop because it’s like way too intense, and i cant keep rubbing after.. is this was the overstimulation is? i totally thought i was actually masturbating and cuming but i guess not? i mean when it gets really intense and i have to stop because its too intense i still cum... hope that made sense.. so am i not masturbating right? what should i be doing instead? stop rubbing when it gets intense?