Thanks for the query to H.C.M.Forum.
Since , you have mentioned , you are taking KEFLEX ( cephalaxin ) for mouth infection ( clearly not mentioned whether it is glossitis
or gum infection
or which type of mouth infection).
Keflex may develops gastric upsets as abdominal cramps, nausea
, irregular bowel movements.
So please upload complete history of illness , so that proper disease could be diagnosed.