I have suddenly developed a pain high up in my chest, fairly central (a bit towards the right). It suddenly appeared this morning, and has been niggling all day, but now it is getting worse. I get a sharp shooting pain in this one specific point when I breathe or move. What on earth could it be?
I have been suffering with sinusitis for the past 4 days, but I do not see how it can be related.
Any advice would be greatly appreciated.