For the past couple months I have been struggling on & off with anxiety, derealization & depression. Lately I've been feeling like my lungs are just tired & i need to cough but dont, I get really weak & my upper body feels tight & i just don't know what to do with myself when this wave of odd sensations comes over me. I have weird thought of just dropping to the floor and trying to sleep it away or running as fast as I can to make the weird buzzing in my body go away. are these odd sensations just my anxiety?? I had really bad heart "thuds" the other night which sent me into a panic and since then have not felt right.