I have been on Advair 500/50 for 3 years now. I have so many of ...

I have been on Advair 500/50 for 3 years now. I have so many of the already mentioned symptoms which include a 40 lb. weight gain, the horrendous foot cramps that last about 15 minutes and can happen as often as they feel like it. I also have the heartburn, indegestion and very dry mouth. My doctor has never mentioned that my foot cramps were due to this medicine, he has tested everything to see why. I have decided no more!! I am tired of looking and feeling horrible, I feel like the goodyear blimp. Before I started taking this medicine I weighed in at 98 lbs for over 20 years Now I am at a whopping 147, can anyone tell me once you stop this medicine how fast does the weight and other symptoms go away?