Pls tell IBS and ind symptoms. Rice!

Please tell me the symptoms between IBS and IBD I HAVE diarrhea( stomach cramps, yellow sticky grease stools, bolting,mild stomach pain) from last 8 May after using medication I came control for 7 day after giving gap of days I ate chicken again my stomach started murmuring again I repeated same medicine ( rifagut 550,dortin -M,redotil,providac,patocid) it came control by 4 after using medication I ate pulihora again started this time went direct consultation started using new medication cifran 500 ,pantocid,mirtology 400 after using first day when I pass the urine & stooIs I got sever flaming kind of pain ... Next days loose stool color changed to brown 3rd day has no sticky and grease stool just yellowish loose stools not water 3rd night I ate two slice of plain bread again problem started please doctors explain me what's is this problem I'm so worried about this and lost weight around 7 to 8 kgs in 30 days taking liquids and curd rice