The development of pseudomembranous colitis, nausea, vomiting, abdominal pain, esophagitis
, diarrhea have been associated with clindamycin
treatment. However, if it has been a year already, the chance of this as side effect of medication is unlikely. This can be caused by excessive gas by intestinal bacteria and your present diet. You would greatly benefit from further evaluation by your gastroenterologist. Take care and regards.