Allergic reaction

After I fed Kate this morning I put her up to burp on my shoulder and she just kept rubbing her face in my shoulder and seemed really distressed. Eventually she calmed down but after that she came out all red and splotchy on her face. It went away after about 15 minutes but the same thing happened at the next feed- although no quite as bad. The last feed I did didn't seem to affect her at all though.

Do you think it sounds like a reaction to something in my milk? Or something else? Or do you think it was just the rubbing that caused it and she was just randomly rubbing her face for some reason?

I have her 6 week check on Monday so will definitley mention it then. How have everyone elses babies with allergies reacted?

Charlottes reactions have always started with welts so this is confusing me.