Severe stomach upset since last 1month.

Facing constant constipation or diahorrea issue(stool is not normal).EXTREME HEAT in body,unable  to take even mild  spice.burning sensation n pain in stomach followed by urge to use the loo.burning sensation during pee and at anal part while passing stools.faced similar issue with acid reflux symptoms last october,used antacid as suggested by doctor ( diagnosed as hyperacidity)for a week and it was fine. feel uneasy n weak,pl suggest what it could be?before this episode,consumed ginger tea on regular basis for 2-3weeks,which did add heat to my body.symptoms continued even after I stopped ginger tea.generally im someone who consumes less spicy food,but currently Even that level of spice effects my body.consumed buttermilk and curd,doesn't help.feel very sensitive to any kind of food,frequent gut issues since few weeks