It's reflux

Dr. P called us back and said it could be reflux, a milk sensitivity or something I ate and passed to her in the breast milk. He gave us an Rx for Zantac. She had 2 doses last night and after the 2nd one we noticed a difference. She was able to relax and go to sleep after each feeding. Mommy and Daddy were very grateful since we hadn't slept the night before.