Hi and welcome to HCM.
it can be so called postchiolecystectomy syndrome which is rarely seen but possible. however it is more likely gastritis
or other stomach issue so i suggest to do gastroscopy to rule this out. till that try to change dietary habits, eat easied food,avoid alcohol, fats, fried food ,coffee and smoking
. Also stress
may aggravate pain. if this is not helpfuk you need more detailed gastroenterologic work up.
Thanks for the query. Regards