Hi, I just read your post, and I know exactly what are you talking about, because is like you describe my symptoms. I have has this for so many years, and Doctors have no clue what it is and they just said not to worry, and that everybody get noises, but they don't get it that this is constant and so embarassing, this problem has make me not wanting to be at parties, and i avoid any quiet place, my visits to the dentist cause me a lot of stress just thinking about the noises.
The only thing that has worked for me is to have some protein when I wake up, (i have two eggs and a toast), the noise will start but after an hour or so it will quiet down, it looks that the protein makes your stomach busy or full, then try to get with your family doctor anxiety pills, like Ativan, and use them when you know you will be around people, the pills make you to relax, and that also relax your stomach and stop the noises.
Good luck!