Dr. Google, Dr. Yahoo, Dr. Mayo, Dr. WebMD, Dr. Internet, etc. can all cause unnecessary anxiety. Use them with caution.
You have something going on but, unfortunately, the diagnosis of what is going on may take some time. Keeping a journal, as Nurse Nancy mentioned, is a great idea and will be so helpful during this process. Discuss with your doctors symptom management while you wait for a diagnosis, which really can take a long time.
Let us know what your next step is and how you are doing.