I have been on clindamycin 150mg 2 every 8 hours for 4 days with a gum abscess. Its still hasnt come to a head yet, and very painful , I can feel a heart beat in it.Was wondering how long will it last. And is there any way to make it come to head. Had mini dental implants put in 3 years ago with 4 up top ,, and the gum abscess is right on top of it .