I have been experiencing a strange very brief(less than a second) pain in my lower chest(beside sternum, left side, beneath rib cage) and on top of my wrist at the exact same moment. Any idea? I have never experienced anything like this before and it happens maybe once a day and at no particular time, very random. The pain isn't severe but very awkward to have. I caught a really bad cold roughly around the same time this started, related maybe?
I appreciate any advice,