Breast Feeding

So It's been a little over a week since i stopped pumping and it has not been good at all. My poor little man has had horrible constipation. Yesterday he cried and screamed trying to get it out. He was getting so red in the face at times i was getting worried, he screamed so intensely he has a raspy cry now , poor little guy basically lost his voice. So i decided to start pumping again even though it is so time consuming.