The camel spider is also known as a wind scorpion, sun spider, and wind spider. They are mostly found in the southwest U.S. and in southern Africa. Camel spider size, speed, and dangers are explained here.
For all of your aches and pains, the large sectioned microwave heating pad from Thermal Aid is actually a heating AND cooling pack in one! It comes in lots of shapes and sizes and conforms to your sore body parts. I also got one of their cute heat/ice packs for children shaped like cuddly teddy bears. These have become my favorite new heating pads!