I find I feel beter eating cakes and sweets. If I had candida I would b e feeling worse right?

I have many silver fillings but maybe I have no allergy?

How does one test for these problems in UK? I had a food test and it doesnt seem accurate as everyone has food intolerances to foods they eat regularly and they just put a packet of nuts on a machine and I had to hold a silver baton while they put a pinprick? How does that test for intolerance and allergy?

I have a few problems that may be subconcious and im not out of the closet so that maybe why I am anxious and depressed? Or can feillings cause it to be worse?