ASk your Doctor to check for 5th Desease as the Symtoms are similar to that he can do a blood test that will be positive if you have it, I believe it goes away ,some people have it for a few weeks some for a few months. Go and tell the Doc .
My rash is not the same as 5th. It never goes to my face. I have had this for years not months. Liver pain and night sweats are also not a symtom of 5th.