I received allergy shots from about 1988 to 2006. I took three shots. I believe one was for cats and dogs, and the other two were for ragweed, pollen, hayfever, etc? I don't remember exactly all that was in the serum. My main concern is that I began taking these shots when I was 3 years old and took them until I was almost 21. Did allergy serum or allergy extract contain Thimerosal or any type of Mercury derivative during that time period, and should I be concerned about having had any type of neurological damage from the treatment?