Hi, It's been awhile I noticed that from my stomach I get a random pumping feeling I want to know what does this mean? I realized that wheneve I drink either orange juice or apple juice I feel better and stops pumping. I do know that vitamin C fights infection. I was having symptoms of a kidney infection but I'm doing from this but I get radom pumping feeling in my stomach and I want to know what could this mean and what can I do? Please let me know soon.