What is going on?

I had something happen last night which I just can't figure out. It's actually happened a few times since I started my no PMO journey.

So last night I go to bed and I'm listening to some music to help me get to sleep. It's definitely music that would not trigger me. Doesn't matter because I get an erection. It's a raging erection too that was throbbing. It keeps throbbing but I ignore it and try to focus on something else. About 20 or 30 minutes go by and it's still there. My legs even start twitching. I try to go to sleep but then this beautiful lady pops in my mind and then I start thinking that we are together and fantasizing that we are making out and then we are having sex. I do not touch myself during this. I'm also not fully asleep but it feels like I am in a trance and it feels like she is actually there with me. It feels like I am actually having sex with this girl. I tried to snap myself out of it a few times but every time I did, she would just keep coming back into my mind and we would go at it again. I even got up to pee once and thought that would stop it. Five minutes later when I get back to bed she appears in my head and we start having sex again. My heart starts pumping and my dick feels like it is going to explode. Again, this feels like actual sex but I am not fully asleep. I keep going until I have a really intense orgasm. I was breathing really hard at the end and my heart was really pumping.

So here is the part I am trying to figure out, is this a wet dream that I am experiencing or am I just finding a new way to masturbate myself with my mind and these deep fantasies? I'm always around half asleep when these happen.

 

I can definitely believe that it is a high level of tension. It gets intense.