medicine that taken by you for fever
may be responsible for the symptoms like heartburn
N S A I D preparations have gastric irritant effect specially if taken in empty stomach .
avoid spicy food or hot drinks till you are free of the symptoms .
You may continue with the pepcid
complete in adequate dose for 5 to 7 days or may take peptard d 1 daily ,mucaine
gel 2 tsf 3/4 times daily
Please consult physician and get a check up for temp you are getting.
Hope you will be all right soon