32week pregnancy- acidity and ibs.

Hi, im in my 31weeks of my pregnancy 4days back i was having mild diarrhea i took sporlac ds tablet 3days twice per day as per prescription but frm last 1month i stoped using green chillies and red chilli powder in my food having healthy food only though i faced indigestion, acidity, gastric & irritable bowel syndrome sometimes mild diarrhea sometimes constipation along with loose stool.frm last 4 days as i said i was having mild diarrhea i was eating only moong daal kichadi wid little cow ghee, idli, dosa without oil,rice with plain watery daal,white bread toast without butter as snack though i developed acidity wen i burp some liquid kind reach till throat say something like burning n hot kind i feel.same like when we eat more spicy food we get such burning burps.presently im on medication susten 300mg and duvadlian 10mg once a day along with Richar CR 100 (ferrous ascorbate and folic acid CR) & calcimax total wat causing me gastric,acidity & ibs is it bcoz of medicines side effects?