Food Allergies Treatment

my 1 month old was showing signs of a milk allergy so our pediatrician had us swich to a soy based formula to help with everything. she can burp easier now, is a lot happier, sleeps quietly at night now without the grunting, and no longer been projectile puking. It has only been five days though. but since we changed the formula she has had severe diarhea that is really mushy and god awfully smelly. is this normal for an infant to go through during the transition of switching formulas?

My baby is 14 weeks old. I started out breastfeeding but I had to switch him over to Similac w/ Iron. His poop has never changed. It’s still kind of loose and he poops at least 5 times a day or more. He is gaining weight and has no other issues. Pedia says to leave him on it but I am paranoid because my other son has a milk allergy and was on soy. I don’t really want to switch my baby over to soy because that constipates but I just don’t think his poo is normal for a formula fed baby. Any advice would be greatly appreciated.

at almost 8 months old? I have twins and Madison is refusing to eat and when she does she vomits BAD. Its like pulling teeth to get her to take an ounce. This has been in the last 2 weeks. Should I try soy? My other daughter is fine with the milk? We have a dr appt in a week but any input would be great. Thanks so much!!!!!!!

My 5 mo old son has been on a hypoallergenic (very expensive) formula since age 6 weeks due to a diagnosis of lactose intolerance and milk allergy/sensitivity. Now that he is on solids he seems to tolerate milk products well and I am attempting to change to a regular formula to save money. Has anyone else tried this? Been successful? Today he is getting half and half and seems to be doing fine. I know what to look for with the lactose intolerance, but the milk allergy diagnosis was shaky so I am not sure what to look for.