Last 3 days i had tongue ulcer, it's disappearing, no fever no sore throat, body-joint aches, warm attacks, feel weak, dry lips, mouth, tip tongue sensitiv?

Lots of symptoms: I am not sure of your question. It sounds like you want a diagnosis and recommendation over the internet? These situations have to be seen by a physician and\or dentist in person for a proper diagnosis and appropriate treatment recommendations. Sorry, feel better.

Visus: This could be a viral infection. But if this longer then you should see a dentist for an evaluation.