I have had a lesion on the roof of my mouth for 12 days, I've also been suffering from nausea,headache,joint pain especially of the spine and have lost my appetite. The mouth lesion makes eating very painful,even lettuce is unbearable. I've seen my GP who has sent me for blood tests-it worries me that I don't know what is going on and that I am now taking time off work following a 2week holiday during which I was I'll!