I Had Pilonidal Cyst Surgery (closed With Dermabond) On November

I had pilonidal cyst surgery (closed with dermabond) on November 17th. About a week later a small part at the very bottom of the wound opened. It has still not healed. I saw a doctor about 4 weeks ago and he said it was not infected, but since then it hasn't seemed to get any closer to healing fully. There is no pain, only when I press directly on it, and it lightly drains pinkish fluid. Is it infected or taking forever to heal?