Which formula to use? How can I get prescribed formula?

Toni

So my 3 month old daughter used to only poop like maybe every other day and her poop was always pasty and green but, oddly, always had a blue tint to it?( I’ve mentioned it to the pediatrician and he didn’t comment on it). Anyways, she’s been having trouble with formula and has switched many times and this new doctor put her on similac total pro comfort. We started that last Friday and she hasn’t pooped since then until this morning... straight up diarrhea 😥 very wet and dark brown. She’s been farting all day and it smells like she needs to poop again but I feel like the pediatrician isn’t really listening to my concerns. I asked a couple times now for a prescribed formula as I feel we are wasting money and hurting her little tummy more. Any other mommas go thru the same thing or know what to do? 😔