I feel absolutely dreadful and have been sneezing constantly for 3 days. My head is hurting and all the muscles round my chest are painful. I have sneezed so much my pelvic floor has given up. I have done 2 covid tests (negative), I feel so ill and exhausted. I have a hospital appointment tomorrow for something else. I thought I would be feeling better and was going to wear a mask. Now I am wondering whether I should try to cancel. I have never had sneezing like it. If anyone has had it, how long did it last?