All of a sudden...

I was on a 14 day trip with my girlfriend to Grenada. Our first 12 days were just a dream. Our 13th day, July 4th, I woke up in such a funk. I felt so disconnected from her and everything else around me. I just wanted to be by myself. I found fault with everything, including her. We came home and I've felt the same since then. I have to push myself to do anything. I don't want to talk to anybody. I don't want to talk to my girlfriend. I feel like I'm drowning. I feel trapped. I feel disconnected.

Besides this, since the age of 16, I have suffered from Depersonalization Disorder after smoking cannibus. I just dont know what to do. I feel absolutey lost.