I need help finding a formula for my baby. We have tried so many, and everything is just giving her bad gas and crying fits. She even bought the red ring around her anus from having a milk allergy. We switch to Alimentum and now she showing the same symptoms of gas and has been scratching her face until it bleeds. I don't know what else to do. My heart is breaking for her, but I don't know what else to try. We tried Similac advanced, gentle ease, ProSobee, total comfort, Alimentum, we are doing probiotics, gripe water, gas drops.  I just feel like I'm failing her. We see the pediatrician tomorrow but any suggestions would be helpful. She is five weeks old