Hello. A few days ago i heard a pop on the back of my neck and felt sore there. Half hour later i felt really dizzy and weak and had a huge panic attack for two hour. The symptomes reoccur lightly every few hours since then and i have problems breathing. What s wrong with me? I m 27, healthy, blood tests fine, anual check-up very good, i work out, i am reasonably fit. I can t get out of the house, i m affraid i ll faint!