I wanted to know if anyone has been using similac pro sensitive powder and switched to the ready mixed and noticed baby became more gassy and severely constipated ?

I had my little one on the powder version I got as a sample and she was going 2-3 times a day . Then I switched to the premixed and within a day or two she was so gassy and completely stopped up . One of the nights she was in so much pain and screaming to the top of her longs we took her to the ER ... last night she was uncomfortable and fussy and I had to help her get it out because the poop was clogged ... once that happened it was like 💩 city 🙏🏻🙏🏻🙏🏻... it dawned on me that the premix has some other ingredients in it that weren’t in the powdered formula and that may have been what clogged her up . So I switched back to the powder today and it’s a distract difference in texture/ consistency between the two products (think milk versus a well blended smoothie ) . I’ve also tried probiotics , pear juice , gas drops etc (all at my doctors recommendation) and nothing really helped so it must be the product change 🤷🏻‍♀️.