I exclusively breastfeed. This week my son turned 5 weeks old and he suddenly started having reflux really bad. He gets hiccups five or more times a day, spits up after every feeding, and you can see and hear him regurgitating the milk throughout the day. Sometimes it's silent reflux but you can see him gagging. He is much more fussy compared to how he was rarely crying his first four weeks. His doctor prescribed him rantidine. I just feel so bad and don't know why this started so suddenly when we hadn't had any problems at all before this week.