I seem to have an anal fissure since last 5 days. i will start using laxative "milk of magnesia" from tonight. any other recommendation? please help

Give few more days: Eat high fiber diet , stool softeners , local care , if it is not improving see your doctor , rx medications , including nitroglycerine ointments to reduce spasm , rarely surgical procedure needed.

Fiber: You should have more fiber in the diet and if the pain continues consider seeing a surgeon for an evaluation and prescriptions that will help it feel better.

Sitz bath: Sit in warm water tub several times a day and don't add anything to water. No salt no sugar nu honey. Just warm tolerable water. Take metamucil every night . One table spoon with two glass of water.