I have a post implant (front tooth). I just recovered from a bad sinus cold and still have drainage. I am now experiencing tenderness in the gum area above the tooth with a little bubble and slight discomfort when pressing skin under the nose. Twenty years ago the metal post had to be removed and replaced due to infection from metal. Could I have another infection? Or is the sinus drainage causing the gum inflammation? The post is not fractured according to a dental X-ray and nothing looks suspicious. Should I be talking to a oral surgeon yet?