jinjin, as long as I can run, I am going to stick with it because I seem to have success losing weight this way. The elliptical doesn't cause so much up and down movement so it is not so bad. Thanks for the other suggestions. I may add those too or use them alternatively if the running becomes unbearable.
mainstreet, I did call the doctor's office. The receptionist relayed my message and I guess that the inflammation was from acid damage. So, at least I don't have to risk an ulcer too.
Thanks all for the help.