White tongue bleedinggum throught pain.

Since oct 2024 i have white tongue its so irritating that i cant eat my throught pains like something struck there . I havent been eating good its like i am loosing all my energy i feel weak . What tests to be done to jnow what is this problem . I couldnt maintain good idet i used to eat a meal per day and sleep all the time as i used to feel week and my bones joints ache . My tongue hurts as i scrape the cream and it also bleeds . Its been months since i went out of my house because i feel too weak pls help me 1 . All the tests to be take mention each and every test pls 2. I might have malnutrition , vitamin deficiencies , STD , STI , Dehydration , Fungal infection , Pre Diabitese , or anything 3. Mention tests accordingly pls i want to be sure about what problem am i facing 4 . My mouth sometime feels dry and saliva thick even my lips get dried and bleed sometimes 5 . Please doctor suggest me all the tests i want to sure please clear my mind i feel dead from inside