I was in the ER last night the doctor said  my lungs sounded clear and my O2 was 99 today since I wine up I been feeling breathless like I can’t breathe or I’m going to pass out. For weeks I been having neck pain that Makes my neck feel like it’s closing and I’m not breathing. I feel like I have asthma or something seriously wrong that the doctors are missing. I constantly feel like I’m not getting any air in and I’m just going to drop dead