Heart Beat More, Asthma, Thyroid. Using Clonazepam. X-rays And Tests Normal. Remedy?

I have a racing heart and my dr. Says its anxiety, but its all the time, now my asthma is worse and prednisone, advair xopenex ventolin don't work. I'm on clonozapam which only allows me to sleep 3-4 hours per night and then my racing heart wakes me. Was on thryoid meds last year which caused thryoid storm and had severe heart pounding. My dr. Said it was thryoid storm, the ER doc said it was panic attacks, had several heart tests, lung X-ray all normal, why does it seem that my heart racing and asthma coincide. I started taking 1500 mg of magnesium and 1200 mg calcium to help with the cough spasms . It helps. I'm fine during the night and morning with no asthma symptoms, but it starts around 3pm until bedtime. No one seems to have answers for me. They even sent me to a psychiatrist and all he did was double the clonazapam at night so the panic attacks didn't wake me which worked for awhile, now I hardly sleep at all and my heart races constantly but not pounding like when I was in thryoid drugs. I'm tired of feeling this way. I've had a long history of asthma in the past, but no occurrence in about 5 years after having my stomach stapled around my esophogus due to severe reflux which fixed the problem. I know I have allergies. Ever since working outside in the spring, it's been bad and can't seem to calm the asthma down.