It's not cancer. Cancer doesn't just spring up like that, especially in the absence of other symptoms. Please stop poking at it if you are.
In response to your earlier post, I haven't taken medication for my anxiety, but if you took it before and it worked, then I don't see why taking again would be a big deal—it sounds like you could use it. They do take a while for the therapeutic effects to kick in. While you're taking meds, I'd also recommend that you begin seeing a counselor to get to the deep-seated roots of your anxiety. Learning how to better manage stress, as well as understanding the root causes of our anxious mindsets, can make relapse less likely when we go off meds.