Advair HFA and nauseous

I began taking Advair 250/50 in 1999. I was convinced Advair was a miracle because it worked so well and eliminated the need for a fast acting inhaler within the first few days. However, now 7 years later, I am beginning to have side effects. When they first started, my doctors told me it couldn't be the Advair. According to the doctors, I should have had symptoms initially, not after years of taking it. So, I dealt with the side effects for a year until asking to be taken off of it.

I gained 20 pounds in 5 months (very rare for me to gain weight at all), mostly in the mid section. I feel dizzy all the time, throat hoarseness and voice feels strained when I talk. My eyes are constantly uncomfortable and sensitive to light, and I have frequent headaches. I feel more irritable and shakey when I get hungry than ever before. Often nauseous. I recently developed PVC's and a heart murmur and almost daily have a racing heart and PVC's. The final straw was when I found the correlation between taking my nightly dose and immediately feeling anxious with racing thoughts, tense muscles (especially in legs), and complete inability to sleep for hours until the medicine wears off.

I have now been off the Advair for 3 days, and have switched back to Flovent only. However, I am still experiencing the muscle tension, racing thoughts, and inability to sleep at night directly after taking the Flovent as well. The symptoms wear off a few hours later and only occur directly after taking the night time dose. I am wondering if the Advair has caused some permanent damage.