I had a tooth extracted about 6 months ago, but a piece of the root was left in the gum. Recently I developed an abscess from the root and went back to my dentist. He gave me amoxicillin which I finished taking a few days ago, but the gum boil is still there. It's like a big lump on my gum. I've been referred to have the root fragment removed by a different dentist, but the appointment isn't for another 2 months. Should I worry that the gum boil is still there? Should I go back to my dentist?