I had a fistuletomy surgery at the end of November 2023. The wound has healed and formed a layer of skin, which is pink in color. I got a US Fistulogram today, the report says i do not have fistula or abscess. It's been 4 months, but the surgery wound is still tender and sensitive to touch. I can feel mild pain (1 out of 5 pain scale) when i touch the wound area. Is this normal? How long does it take to become completely pain free?