Umpteenth time symptoms and conditions

I'm diabetic, have underactive thryroid, hypertension. On several meds including 20mg Lisinopril. I was put on 40mg twice a day beta-blocker last week after my umpteenth time complaining about exactly the same stuff as I see on this website. Have been in the hospital twice in the past year for these problems (they said I was dehydrated)...wore the heart monitor, all that. Heart is fine they say. Just beats weird now and then. I'm now goung to have to talk to Dr. about this drug. Sounds like it may be my problem. I, too, have wondered, "Am I trying to have a heart attack".