Many thanks for all your replies! I think my arm is definitely getting a bit better, albeit after one week. The problem with googling symptoms is that it often gives you the worst case scenarios and it definitely fueled my health anxiety. There are days when I am so convinced that I have MS that I can't do anything other than worry. The annoying thing is that I didn't even worry about neurological diseases until someone mentioned MS in passing a couple of weeks ago (when I had no symptoms) and planted the seed in my brain. I find it extremely hard to be logical when thinking like this and even as I am typing this, I am noticing a slight weakness in my arm which sends massive red flags to my brain. It's exhausting.