With your history you are suffering from Fissure. The cause is constipation / hard stool.
Some natural way to tackle with hard stool / Constipation are-Take DABUR NATURE CARE ISABGOL HUSK- one big teaspoon in one glass of Luke warm water after breakfast and one after dinner daily for 1 month. Take plenty of fluids , salads in each diet. Get Flax seeds, fry it in a pan without oil, then put it in a mixi, make powder and you can take 1 teaspoon with jaggery morning and night after meal.
Next Steps
if symptoms persists then get a short scopy done to rule out same.