Since the other day I kind of feel like I have the post workout endorphin rush constantly, it feels like everything around me seems kind of slow, I have trouble focusing on things, and I get lost in my thoughts, due to this I have started having minor panic attacks and I just don't feel right, and haven't for many days.

I went to the doctor and got a urinalysis and bloodwork done and everything seemed to be ok, which only freaked me out more because I know something isn't right.

Note recently I have went from being very unhealthy and largely over-weight to being quite health and my weight has dropped down roughly 50 lbs, I have been going to the gym and trying my best to get healthy, but I haven't been able to do anything recently.

My appetite is also gone.

Any help on this just to ease my mind would be more than appreciated, I really need something to calm me down, thanks in advance.