Does this happen to anyone else/is it normal?

I have recently been having alot of s while dreaming. Sometimes in the dreams I am engaging in ual acts while other times I am doing something completely random and not related to anything ual. A couple of times I have woken and found myself touching myself, and it feels quite pleasurable, as if I am on the brink of already. I do masturbate frequently. Is this normal? Has anyone else experienced it?