RitaMarie, If you had the parotid thing going on and took antibiotics with some relief that is not unusual. One thing to remember also is that our body often continues to heal even after the antibiotics are finished. Also, if you have an ear infection this changes the pressure in your eustacian tubes and causes swelling that may press on the parotid gland ducts. This pressure might have helped to "milk" the duct and the parotid swelling went down.
There are so many things that can happen. Also, if you are on another course of antibiotics for the ear it is entirely possible that this added antibiotic therapy helped finish the healing in the parotid gland. And again,infections and inflammations are so closely related in some ways that it is hard to really know what is going on.
As was said, you may be interested in joining a clinical study which would help your feel useful in finding a cure for these diseases. No one is trying to be flip about your experience. My gosh they are dead serious that they wish it would happen to them. There are so many things in the medical world that can happen, improve, get worse, change, and the list goes on and on. The bottom line is much of the time the educated people don't know what. So much to learn, so little time, as the saying goes. But we are making progress every year. Times have sure changed in the years I have been ill.Irish