My stomach is weaker

[An99]

Since i was young i had a problem with my stomach, but after i started eating healthy and not too much sugar or salt i felt better and now i can eat all kind of foods making no abuses. It wasn't any problem until now, but sometimes when, for exemple i don't eat for a long time or i eat something that i didn't eat in a while, i feel sick. My stomach hurts and so it's the lower belly. It's not too often but it disturbs me. I was thinking maybe some herbal medicine could help me ? Thank you.