I think I'm a hypochondriac? Am I thinking to much?

That depends... Since you "think" you're a hypochondriac, you seem to be open to understanding your "worry" about being sick as something that could be understood in some way other than being "certain" that you are sick. Since you don't say anything about why you think you're a hypochondriac or how and what you are thinking about "too much", i'm not sure what else to offer.
I don't know. Hypochondria is now called health anxiety disorder. It occurs when a person becomes obsessed with the idea that they have serious medical problems /condition (when there is no diagnosed condition).