Please someone help Idk what to do

My baby is only one week and 6 days old and the dr switched her formula like 3 times now because she’s been constipated today she gave me this one and I tried it and my baby is literally screaming her head off in pain alter drinking it and throwing up does this mean she’s allergic to it Idk what to do I just wanna cry she’s been screaming for a while now I tried rubbing her stomach I’m holding her now she’s in so much pain Idk why she would give me this milk it messed her up so bad 😥 has anyone tried this before and this happened to you? Is my baby going to be ok should I go to the hospital I’m so lost Idk what to do I’m freaking out I’m scared she was drinking enfamil gentlease but dr switched her to this so first it was similac then enfamil gentlease and now this one