My 3 month old will not stop crying!! She will not take a bottle, pacifier and rocking only helps sometimes. We thought it might be excessive gas, so we switched her bottles to the Dr. Browns. She is on the costco formula (yellow tub). She’s not puking or having diaherra, so she can’t be allergic? She will not eat unless she is starving . 2 days ago she went 8 hours without having any fluids, so we brought her to the emergency room and they diagnosed her with heartburn. We give her baby Zantac twice a day and it’s still not helping. Has anyone else had something similar with their little one? It’s so sad to see her in pain ☹️