I need some advice or something!

I have a 3 week old who is EBF and every morning or at least once a day she basically barfs. She acts like her belly hurts when I touch it and is constantly grunting and irritable due to belly pains

I took her to pediatrician and he said she has a ton of gas buildup in her belly and her belly is tight and that she has acid reflux and may have some sort of intolerance. He put her on acid reflux medicine and told me to get some kind of drops for her intolerance but I cannot remember what kind he told me to get. I haven’t had a chance to call or go in and ask.

I’ve been watching my diet since then and giving her acid reflux meds twice a day like prescribed and nothing is helping. Has anyone else experienced this?? Does anybody have any idea what kind of drops it is?

My 2 year old had acid reflux but Zantac took care of his instantly so I’m lost!

Thanks!!