My 19 week old son was also diagnosed with reflux and was prescribed Ranatadine. He was colicky in the beginning, but he got significantly better soon after he turned 3 months. The reflux, however, still bothers him. We have to feed him small amounts more often (every 2 hours during the day). Otherwise, he tends to get sick and/or you can tell that he's in some discomfort (he gets very fidgety, cranky, etc.). That being said, he will let us know when he is hungry and/or if he has not had enough to eat. I think that most babies will do that.
Is your doctor concerned about your daughter's weight gain rate?
My son's doctor told us that many babies with reflux have a more difficult time putting on weight than other babies. Our son was a skinny baby, but he has steadily grown since we started him on his prescription. We're going to start him on oatmeal cereal this week (earlier than normal) as our doctor suggested that it will help our little guy keep milk down and put on more weight.
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