I hope you are taking those medications (all medications) based on a treatment plan from your doctor....that's the "okay" you need.
What are you trying to accomplish, heart rate control ( slow a too high HR down) or are you able to obtain a normal sinus rhythm?
I had afib for several years until i had a cather ablation and fixed. However, as for the asprin I was always on an 80mg asprin... I dont know about the 325 mg. Im not familiar with the diltiaz but I did take furosemide, metroplol (toprol Xl) and digoxin without a problem. hope this helps claytex