TMI??

Sooo I need clarification. When I'm intimate with my S/O I become extremely wet and will sometimes (most times) everytime we switch positions I see like a milky mess all over his penis but he obviously didn't cum so what is that... and like when we're intimate sometimes I feel like an explosion and my vagina starts pulsating but I don't really ever feel like I cum. But it's like my entire body tightens up and it feels like a release and I'm sooo aroused and it just feels awesome. What is going on... anyone please help