3 months ago GP raised diltiazam from 180 to 240. Worked well. Heart felt really good etc. Problem - feet, ankles and calves started swelling every day. Last week GP lowered diltiazam back to 180. Swelling is minimal. Shoes fit. Ankles have bones. However, heart has been acting up. Doubt it's AF but these other wonky palpitations are not fun. I see my EP tomorrow (10 months post a ablation) any ideas what he will suggest? Anyone know much about water pills? Long term side effects? I'm 52.