Flecainide Acetate and medication

I have had A-Fib for approx. 6 years. I am a 61 yr old male, and have taken Flecainide for approx. 2 years, along with Diltiazam. I have loud ringing in my ears. I often wake up in the night with a very rapid heart beat (in normal rythnm). During the day I'm not bothered much by a "pounding" heart beat, but am at night. I still go into A-Fib periodically with this medication, and it usually last 6 to 8 hours before going back on its own. A-fib attacks vary--I may go several weeks, then have problems 2 or 3 times a week.

I been on Flecainide for three weeks now for arrythima(SVT). I haven't really felt any side effects, sometimes I do get a stomach ache. I sometimes feel flutters, but not near like I use to, I feel like this medication keeps my heart rate normal, and it keeps me from going into an SVT attack, where my heart is racing like crazy. Hopefully, this medication will continue to help me, because its so scary to have your heart race!

have the medication for pain managment
fast heart rate
flushing
disoriantated