I'm not a therapist, but my hubby used to have a friend that is bipoler. He acted just like the actions you described. I'm not judging and there is nothing wrong w/ this. If it is bipoler, then it is a disorder (a chemical imbalance) that can be corrected w/ medication and counseling. My hubby's friend learned coping mechanisms when he was angry. Things like hitting a pillow, carving wood vigorously, and other things that would get the energy out. Ask the psycologist about taking a test.
I hope that you feel better soon.
