How Can GERD Be Treated?

I have been taking omeprazole bicarbonate (for GERD) for 20-plus years, along with clopidogrel (plavix) for more than the past 10 years due to receiving several stents and then a CABGx4 in early 2015. My Cardiologist has been aware of the reported drug interactions between these two drugs, but has kept me on the omeprazole bicarbonate because other GERD-related drugs, such as ranitidine, have not stopped my GERD symptoms. Recently, after losing my long-time Primary Care Physician (PCP), I have now been assigned a new PCP who has refused to re-authorize my long-time omeprazole bicarbonate prescription (due to the reported drug interaction with plavix. My new PCP has written a new prescription for Ranitidine, but after three weeks, I still now have GERD symptoms daily (while I had no GERD symptoms for the past several years while taking the omeprazole bicarbonate.) How do I reconcile this new disagreement between my long-time Cardiologit and my new PCP regarding which GERD drug that I should be taking? Thanks for any help! YYYY@YYYY