Nine weeks ago I had my bottom right impacted wisdom tooth surgically removed. Everything went well and my pain in my jaw subsided after a month. The hole is still not closed up yet. Just a few days ago I noticed below the extraction site, near my jaw, it is tender again when I push on it. I have no fever. I read where it can take months for this to heal. Is it normal to experience discomfort until it heals, or could this be an infection starting?