Have a doubt. Cured? is sp02 is normal?

Symptoms came on 14th May. Tested positive on 20th May. No diabetic Nothing. Only taking thyroid tablet 25mg.. Age 61 female.. home isolation. With doctor advise had Doxycycline, paracetamol, pantoprozole 40mg, tap- methylprednisolone 8mg, cap becosules zinc and fulka 150mg for 5days morning and night. Now continuing zinc and dexorange syrup morning and night. Sp02 is 95 96 97 like that.. but tounge is like this for 4days. In corners alone somewhere looking mild bluish colour.. why it's like this? And one teeth was shaking many years. Now it's paining and because of that remaining teeth is changing the colour. Why this tongue and teeth Is like this?its because of covid or covid not yet cured? Is Sp02 is normal?