I had fistuletomy surgery about  4 weeks back. In the last 2 weeks, occasionally, after defecation, i see a few drops of blood. This happens once in 3-4 days. I have been using stool softener, and my stools are normal. I spoke to my surgeon, and he said this is normal. But i am stressed due to the bleeding. My question is, if it regularly keeps bleeding, how will the wound heal? Why am i bleeding after 4 weeks of surgery?