i congratulate for giving up smoking
.from your history, it seems that you are suffering from acute gingivitis
.it is beacause of smoking and not doing brush properly.due to this tarter collect on your teeth and gradually it will enter into your gums,leading to infection andpilling off gums.
you counsult dentist
and seek his advice.scallig of teeth and sometimes flap surgery may require.this definitely help for healing and restoration of your gums.
pyorrehia also to be ruled out.
i do not advice use of local use of steroid