I've had an ingrowing toenail 3 times, all really badly, very painful with puss etc. As has my father, my mum did the following to prevent us from having the op.
what you will need: TCP, cotton wool and a sterile needle/pin.
1. Get TCP and soak your foot in this solution
2. Use the needle to gently raise the corner of the nailbed
3. Take a small piece of cotton wool and use the needle to push this under the nailbed, as far as it will go
4. Continue to pack more cotton wool under the nail until the nail has been lifted from the nail bed.
5. Each day this process must be repeated, its time consuming and painful, but you dont have to have surgery!