25 yr female. 139lbs 5'4. no medical conditions, but gad. went back to dancing,i get out if breath really fast during excersice, i get pounding heart in the head and clogged ears. no medical conditions. cardiology stress test normal. how can i fix it?

Deconditioning: Unless you exercise daily your body muscles become very weak. This means that you will run out of stamina with any vigorous exercise like dancing or jogging. The solution is to exercise daily, starting slow and short distance for a few days and then increase the distance and also the pace of walking. You should spend 30 min walking daily. Then you will have a healthier/stronger body and feel good!

GAD: Sounds like GAD. You need to start relaxation classes and hypnosis may be effective. Good Luck