Food allergies

Hey guys I was wondering if food allergies can affect the baby? I'm 11 weeks pregnant I ate a homemade cheeseburger with veggies in it. It had carrots celery cucumber tomato grilled onion cooked ham/bacon lettuce ketchup and mustard. I ate most of it because i know the baby has to eat. After an hour I started to feel sick. I wasn't nauseous but I couldn't keep the burger down so I threw up :( .after I noticed I had red dots all over my face and neck. Idk what gave me the allergy bc i usually eat all of the ingredients once in a while and nothing like this happened before. I'm just concerned that the food allergies might affect my baby.