Hi, my baby is 5 month old. She is on breast feed, she is having digestion problem, she spitout the milk after every feed many time she vomit large amounts approx 3 to 4 large vomiting in a week. She is not sleeping well in night, she slept at 2 a.m. at night and start crying after 30 min. what should I do, many time I visited to Dr. also.