Got ur pain n concern though it's unfortunate but common too in summer.
U may Triggered acidity. Ayurved offers amazing outcomes with such irregularities so plz consult AYURVEDIC college Hospital in ur city or clinic or feel free to communicate with me.
Health Tips
till then Reduce salty n sour food n drinks and late night life or dinner.
Gulkand n praval, shatavari can be taken for a week to sooth