Milk protein allergy?

Julie
Have any of you momma's had yoir lo diagnosed with a milk allergy? My child has been switched to 4 different formulas due to constipation issues and by chance we ended up on Alimentum which has helped a lot. However, we have introduced my little one to the yogurt found in the baby food section and was wondering if her symptoms that appeared recently could be due to that allergy? She has red runny eyes that she has been rubbing at, runny nose and congestion (she has been diagnosed with ear infection and sick buy cleared up a lot until tonight) but her runny nose came back with a vengeance and so did her congestion and multiple screaming and crying fits which is extremely uncommon for my child. What are the symptoms to milk protein allergy if you have dealt with this