Ingrown toe nail??

I'm going to the doctor tomorrow and I'm really scared that they are going to cut my whole toe nail off! It is horribly infected. I soak it in salt water and peroxide but nothing seems to change? the infection just seems to get worse and worse and it is killing me to even walk let alone stand! Please give some advice or reassurance or something! It looks really nasty and I'm soooo scared! ?? what are teu going to do to it?!?! Help!!