A dentist put me on1800 mg of Clindamycin a day for 7 days to take care of an infection from a root canal resulting in a lump in the foof of my mouth. When I finish the lump was gone but now I have a bad sore throat with pus I can see and get out on a q-tip and have had it for two weeks already, went to dr and did a swab but negative, now want me to try a nastatin oral susp 5ml to see if this helps, I am afraid to put things in my body that may or may not work, I am also on supposed to take acetaminophen/cod4 for my pain which I am also Leary of taking but when I no longing can stand it I give in and take a half one, what do you think? Can it be-a yeast infection in my throat?