Hello, everything you describe sounds pretty normal. During an Apicoectomy, the dentist make a small incision in the tissue closest to the tip end of the root. Hence the stitch or two. Next he/she will take away enough bone in front of the root to gain accsess to the root tip. The infectious tissue is removed, usually with a curette that scrapes it away and then the opening in the tip of the root is filled with some form of filling material using a tiny instrument. As far as the feeling you get when you move, I imagine it is just tender and the vibration from moving is more noticeable. Considering the area of the procedure, you can understand why you lip would be sore. As for the canker sores, they probably came on as a result of stress to the tissues being pulled, etc.. Many people with a history of cold sores will get them after dental procedures just because it aggravates the tissue a little. Hope I helped.