Numbness in the arm anxiety related - is it going to be a persistent problem?

In December last year, I had to go to hospital because the NHS Direct service suspected I could have been having a mini-stroke. I went through a lot of tests, all of which said there was nothing wrong with me. My doctor tells me that I have anxiety. I don’t understand why though. I’m not mentally anxious about stuff, so why is this a problem?
Also…more than once I have been getting a numbness in my left arm – sometimes also in my hand, which lasts for a good while (about fifteen to twenty minutes or so), and then goes away. Sometimes it’ll go away after I’ve been to sleep. It’s not a very common problem for me, but it’s been happening a few times now. I see my doc, but he just says “it’s anxiety related” – as if it’s not really a problem, doesn’t give me any meds for anxiety, just might as well tell me to grow a pair and deal with it like a real man or something.
I guess I’m after finding out if other people have this kind of problem with anxiety related stuff, and if anyone has a way of breaking through it so it’s not a regular issue. It’s becoming a problem to the extent that I’m not actually living life normally, but my doc is just persistently sending me off with no clue as to how to deal with it, and I think it may become a problem with various government organizations (which I don’t particularly want to delve into the details of).

Anyone got the same kind of issue, or any advice?