I Must Say This Is Horrible To Lead Folks On

I must say this is horrible to lead folks on to just have to pay AGAIN to get help with a problem......I have had canka sores in my mouth and other types of sores for about a month. Disappeaing and returning. My lips are very dry as are the sides of my mouth. The inside is dry, but I do drool. I have never had dry lips until this past winter. and still do, what would cause the soress, sesitivity to all liquids, very dry lips...and also sensitve tongue and one time. I've been to two doctors and one dentist