What Causes Pain And Burning Sensation Of Hysterectomy Scar?

today I am 23 days post op a total Divinci hysterectomy. The main incision site- where my md said all the main tools were inserted is about 1 1/4 inch. It was glued shut. The glue is now all gone and I have been rubbing vasiline and scar gel on it since the glue came off. The scar does not look infected and really has not changed in appearance except healing. Yesterday I started feeling sudden stabbing type pain. Super fast... like a stab then normal again. This has continued to occur randomly. Today that same incision is burning. Still looks the same. Are sudden stabbing and then burning sensations normal as the skin heals?