Can pulling out a green string from my nose cause any harm or worsen the results of my procedure?

A week after I had a septorhinoplasty with cartilage grafts my surgeon removed my cast and internal splints etc. Upon arriving home I noticed a green string on the inside of my nose, leaning close to my nostril but not in contact with my face. It was close to my septum on the back of the nose. It felt like it was out of place so I pulled on it and it came out. There was a bit of resistance as it was coming out, but not enough to cause any pain.