Stitching after dry socket. Be there?

Hello doctors, I had my upper molar tooth (6th number from front) extraction on 5th september, 2020. Then on 8th September I got socket , my dentist started ZOE dressing for that and it gave me relief and I had my last dressing session on 19th and after that I was completely fine. On yesterday I noticed a gauze like thing is there which wants to come out and today I visited my dentist's chamber, he checked it thoroughly and then asked me to do a xray and the xray report there was no gauze found. Then he checked twice with lots of surgical tools and all after giving me a local anesthesia, I bleeded a lot on that time and then he stitched that area. He told me to come after one week to cut the stitch. So my question is can the dry socket come again after the stitch thing happen and how long this pain will be there ? Please response soon.