Try not to worry Clare, you have enough to think about with the cavitations, whatever your fillings are right now prolly ain't going to make that big a difference. Most important thing is you don't torture yourself with the what-ifs and can try and rest and recuperate, Y'all been through an awful lot a stress.
Arnica 200 twice a day for shock is unbeatable and can't hurt at all, you can order it from Helios Homeopatic , and get a good night's sleep by whatever means.
We're ALL confused , give yourself a break for a while, I'm sure you will get to the bottom of it.