Is there anything I can do about my anxiety?

To start off, I'm a 16-year old male, I exercise daily, I eat right and my lifestyle has been good until a few weeks ago. For the past few weeks, my anxiety has been just horrible . Every day is another struggle for me. At night I feel detached from my surroundings. I can't fall asleep because every time I go to sleep because of my shortness of breath. I have frequent nightmares and vivid dreams that leave me waking up in the middle of the night gasping for air. I don't even want to go to sleep at night because I know that i'll have another nightmare. Throughout the day I don't feel like myself, I feel as if I'm just floating around. I hate feeling this way, It makes me feel like I have a rare and serious disease that will eventually kill me. I just feel empty. I also have frequent obsessive thoughts about my breathing and my heart beat, like if my heartbeat gets weaker, I immediately think that there's something wrong with me. I'm seeing a psychiatrist about my problems but it hasn't helped at all so far and I don't want to start taking anxiety medication. Is there any hope for me?