He's been vomiting at 12 am - 1 am, 5 am and now againt at 8am.

We have a Dr's.phone call today at 2:30 PM but I'm not hopeful.

He only seems to vomit after wanting breast milk so now I'm scared he's allergic to my milk.

He goes to daycare and I'm thinking it's probably a stomach bug, phlegm or food poisoning that might be bothering but he's only vomiting now after breastfeeding so I'm concerned.

Is it possible for him to develop an allergy to my milk?