Exercising with weights symptoms and conditions

49 year old male started 4 years ago at 20mg and 10mg HCTZ. some results in lowering BP. 2 years ago MD upped it to 40mg because BP inching up. quit smoking 3 years ago, not one puff since. After MD upped mg the side affects have really kicked in. I experience all the side effects listed on this site with the exception of the cough which I started with but went away after a couple months. I have had stress tests, Holter monitor for heart arrhythmias, mri, blood work, stool samples, colonoscopy, and all sorts of other tests all coming saying I'm ok, yet I don't feel ok, I get progressively worse. After 4 weeks of 5 day a week exercising with weights and aerobics to get in shape to return to racquetball I have had it. I couldn't last 45 minutes my second day out. I felt like I was hit by a truck and it took a couple days to recover.
My MD attributes the issues to aging. I going for a second opinion and third if necessary. I am told by my MD that there are no studies showing these side affects for this medications. However I look at this web site and find it hard to believe that these doctors just haven't seen any evidence of what we are all suffering from. Why don't doctors really listen to patients. We are asked to listen to our own bodies and told we know our bodies better than anyone, yet when we bring up these issues we are treated like children.
No real answers, just questions