Omg crazy! I'll ask my doctor thanks!

Mine was on Gentlease I switched my little one to Similac Aliumentium (or something like that) its hypoallergenic (turns out she has severe milk and soy allergies) and that's what caused her constipation

I will try it out thanks!

You can try a soy based formula

With the same formula as you along w bf, my son also had trouble. We switched to similar advanced and it helped