My 12 week old has suspected allergies to cows milk protein and eggs, he is exclusively breastfed. Due to a fairly bad reaction yesterday GP has advised me to stop eating dairy and egg's immediately and to start him on omeprazole. I'm a bit worried doing everything at the same time, how will I know what helped? Typically I can't phone the GP back to ask as I've thought about it too late and they're closed until Monday. I am now umming and ahhing about whether to give the omeprazole. Can anyone help?!