Anal fistula is a chronic abnormal communication between the epithelialised surface of the anal canal and the perianal skin,In a lay mans language it is breach of external skin and this breach results in direct communication of your anal canal with external enviroment and pathogens.It can be a potential source of infection if left untreated.Its just like a open wound where skin is breached this break in the skin provides a route for the germs to travel from the outside to the inside. Even the pus inside the fistula can spread further leading to formation of multiple tracts and several opening in the skin around the anus. This makes the fistula more complex and further difficult to treat. There is a risk, though low, of cancer formation in the long standing Anal Fistulas. Therefore, Fistulas should always be treated at the earlies s per your query, Pus should be drained out regularly if possible every alternate days. Mupirocin antibiotic should be used twice daily locally over the area. Proper hygiene should be maintained,Any oozing pus etc should be cleaned up immediately. Any broad spectrum antibiotic like Cefixime should be taken in low prophylactic doses as adviced by your gastroenterologist. Try to take a healthy diet,Immune booster and natural anti oxidants should be taken regularly to boost immunity. For pain analgesics can be taken as and when required. Abscess area should be cleaned with Betadine solution daily. As long as an abscess is drained adequately and the correct antibiotic regimen is prescribed, the abscess will heal well and resolve. Take vitamin C and folic acid supplements they promote wound healing.