Hi thanks for your question.
During hystrectomy many stiches are given inside the abdomen.These stiches are made of materail which get absorbed by the body,without any reaction.Duration postoperative period and during healing process some of the tissue get necrosed exposing the the underlying stich.I think that is what has happened with you.Local anaesthesia cannot be given vaginally to cervical stump (part from where uterus
was excised) and taking the patient for removing of stich for regional anaesthesia or general anaesthesia
is not feasible that too when you want to get it removed without any planning.
He did the right thing and the remaining portion of thread will get absorbed itself.
Pain could be due to local handling of part without anaesthesia and hopefully go with rest and pain killer.If pain is not responding to ibuprofen
,you can take combination of ibuprofen with paracetamol
.I hope combination will be helpfull to you.
Hope this answers your question.