Hi all,
My baby is just under 4 months old and up until the last week has been exclusively breastfed. We are now doing some combination feeding with formula as a result of a difficult month BF, I had mastitis and a stint in hospital, a dipping supply due to this and then I had a bad tummy bug and wasn't able to eat much/look after myself...anyway, my supply is at its all time lowest, I've had to make the difficult decision to start introducing formula as my little one has been crying after feeds and very fussy which we put down originally to some wind, but we tried her with a bottle to top her up after and she guzzled the lot and has been loving it since - she seems a lot happier since we have. I feel awful that I didn't see the signs sooner! 
Anyway, since a few days ago I've noticed a red raised patch on one of her cheeks and it's now appeared on her chin too (right on the tip), it doesn't seem to be bothering her but I can't help but worry it might be an allergy to formula?
Has anyone any experience with this and might be able to offer some advice on what I can do? Both my HV and GP surgery are useless, I'm planning on trying to move surgeries soon as I'm not happy with either of them and they are never able to offer the right help or support (I had not long moved to the area whilst pregnant and wasn't registered anywhere and had to pick suddenly as I became unwell).
Thanks in advance - don't want to jump the gun and say she has an allergy just seems a coincidence the rash has appeared at the same time as the introduction!
Thanks x