My daughter is 6 weeks old. She cries alot and has since birth. She was diagnosed with silent reflux two weeks ago and we started Zantac. I noticed some improvement immediately. She had some calm awake moments and stoppped choking and gagging. One thing I noticed recently is she eats well and is then happy for 30 minutes to an hour. After that she screams until i feed her again. We go back to the doc on wednesday, and I will ask about possible allergy, but I was wondering if there could be a feeding issue I am missing.