What's wrong with me? Am i anorexic?

I'm 5'2 and about 126 pounds....I recently lost 17 pounds...I have worked out and dieted like crazy...almost too crazy. I have this obsession with not wanting to be fat and I fear for my life that I am going to gain my weight back again. I get scared to eat too much and hae developed this habbit of rubbing my arms and chin under my chin excessively to see if I'm fat...how do I stop this? Am I annorexic?