ayurvedic remedy causing lower abdominal pain?

Whenever I take any herbal/ayurvedic remedy like chavanprash or triphala, I have lower abdominal pain, vaginal discharge. Sometimes the pain is in the rectal area too. My mom says it is due to excess heat caused in the body. I try to take lots of fruits, buttermilk to cool my system but It’s hard for me to continue the simple herbal tonics/medicine. What should I do?