Hi EVW. First thing I'd like to mention is stress tests are good but not 100% which I hope your cardiologist told you. I say this because I had several stress tests done over time and every one said things were normal. Finally, I went for one more on a Tuesday and it said things were OK. Two days later on Thursday I had a heart attack and had three stents placed.
If you still have chest pain after a stress test shows nothing, maybe your doctor needs to do a heart cath. This will tell him/her anything a stress test doesn't. I believe that medicine and diet can help but it depends on the individual and extent of blockages. I have severe CAD and we tried every medicine out there and nothing worked. This is what has led me to have fifteen heart stents. I pray that things work out for you. But again, if your stress test shows OK and you still have chest pain, please talk to your cardiologist about a heart cath.