Workaday World XXVII

Not only am I thrown today because I don't have my shoulder bag with me, but I've been experiencing an odd, disconcerting tingling in my right arm. It's mostly in the palm and wrist of my right hand but is noticeable even up into the forearm. Is it repetitive strain injury? The lingering prelude to a heart attack? Something else? I have no idea, but I hope that it goes away.