If you've had a CT Scan, or anything else to check for a brain tumor. Then you need to stop worrying. Seriously.
If you haven't, then get one. In the meantime, if you can't do anything, use that appointment as something to look forward to.
And even in the case of getting a brain tumor, there is so much amazing technology out there that can fight it.
I too got a CT Scan because I was convinced I had a brain tumor. Well, I didn't.
Seriously, we can't live like this. We need to do what we need to do, to get answers to our questions, but at the same time, this is a wasted and disgusting life if we are going to sit around and live like this. I feel your pain Kristen, I was exactly where you are, infact, I am there right now.
The only advice I can give, is to just do the logical thing, and then once you get your results. You DON'T think about any more "what if's".
And stay away from Benzos.