I agree with avoiding "white bread, cheese, and processed foods".
But to get instant healing and results do 2 things:
1. Mix half a teaspoon of cayenne pepper in a glass of warm water with a little lemon juice. Drink once a day. There will be pleasant heat throughout your body. Don't worry about it.
2. Make a paste of Turmeric and Olive-Oil and rub it gently on and in the rectum.
Do these two things and things should be better in 2-3 days, depending on how severe you have it.
Then, start following the diet. A bit more water, more fruits, vegetables. Less gluten and dairy.