Duper, your symptoms are clearly caused by your fillings, especially since they started after getting your fillings. I also have cholinergic urticaria, and it started about one year after I got my filling. The urticaria was very mild, however, so I never got worried about it (this was a mistake). It is probably not caused by mercury directly, however, as this is more a candida related problem. Urticaria is caused by mast cells producing excess histamine, and this is a reaction to foreign proteins, toxins etc. in your body. It is likely a reaction to the candida toxins, and candida die-off (acetaldehyde+foreign proteins). Candida on the other hand is caused by mercury, as it weakens our immune system.

Do not take your symptoms lightly, in the worst case you could end up with lyme disease on top of this all, without even getting bit by a tick (lyme can apparently be spread in other ways too), because of your weakened immunity.

It's too early to say why everyone doesn't seem to get weakened immunity from mercury, but it appears to be related to some genetic defects related to glutathione handling, although there is still a significant individual difference in how much mercury leaks from a filling.

Do not think that you wouldn't need any treatment, because you only have two fillings. It's often not the mercury that is the real problem (after you get your fillings out), and you really need to understand this. It's more about killing the pathogens, like candida. Even the metallic taste you may have is related to candida, and not to mercury.

I have visited various forums that deal with issues from candida to mercury and lyme, so I know what I speak of (in addition to my own experiences).

In the candida forums the greatest mistakes are made. They keep ignoring the mercury fillings, and try to eradicate the candida without removing all their fillings. This is really hopeless - it will not work. Although it has to be said that some with candida have Lyme too, so removing the mercury fillings wouldn't be a final solution either.

On mercury forums it is thought that once you get your fillings removed and chelate your mercury out you should be completely healed. This doesn't work either! You will need to address the candida and other pathogens to get well. The only thing that is vital about mercury is getting your fillings out. The stored mercury tends to be smallish, and it is often a small problem compared to your pathogens. This is so well demonstrated by healthy people (who can have lots of mercury fillings) who also excrete lots of mercury when given a mercury chelator. The mercury chelation protocols still happen to work quite well because many of the mercury chelators targets the candida and their waste products and other pathogens as well (the combo DMSA+ALA particularly well).

On Lyme forums things are done right, because this disease is so serious, that you can't afford to do things wrong - and neither will light methods work. On Lyme forums, removal of amalgam fillings and mercury chelation is thought to be only a part of the treatment, but nobody expects to get well on that alone.

So you still need to go through the candida and possibly other pathogen treatment after removing your fillings. A misunderstanding of your problem leads frequently to mistreatment. The protocol developed by Andy Cutler (ALA+DMSA) can only cure the easiest cases, and even many here need to do parasite cleanses in addition to that to get well.