Baby sick after BF but not Formula

[Ploppymoodypants]

Hello, I have been mostly BF my DD (19 weeks old). I am very fortunate and it’s going very well, and she loves her food. She also has a bottle of formula maybe once or twice a week if I have some ‘me time’ and leave her with granny or daddy.
However she is a very sicky baby and sicks up sooo much milk about half an hour after each feed in the day. (But never at bedtime or nighttime feeds, she goes straight back to sleep 🤷🏼‍♀️). But the sick is only with breastfeeding. And then she is hungry again, straight afterwards. She is never sick after formula. I do feed on demand and wonder if she is a bit greedy (she is greedy, like her mum 😁) and is over filling herself. But I thought you couldn’t over feed BF babies.
Can anyone shed any light on this please? She is gaining weight well, and is happy and contended and is t distressed by the sick either.
Many thanks in advance.

My understanding is that you can't over feed a baby, as in them putting on too much weight but they can take too much milk for their stomachs. They will be sick when this happens.

Have you tried keeping her upright for about 30 mins after a day time feed and make sure you get all wind up. Other than that maybe you have a fast let down or she is just taking a little too much?

My first ds was a sicky babe, nothing wrong with him, he just used to vom a bit after each feed. I mentioned it to a dr and they said he probably just takes too much at a time.

Thank you for responding. Yes doing the keeping upright thing. And she brings her wind up very easily and quickly. It’s just that it’s not a little bit of sick. It’s masses. Enough to soak her and my top and it’s about 3 loads like that over a space of 15 minutes say.
Perhaps I will just have to pace her BF feeds a bit more...

Try feeding little and often in case you have a fast letdown which is causing it. Also maybe try adjusting her feeding position so she feeds more 'uphill'.

Has she always been sick after feeds? You're not on any new medication or changed your diet dramatically? Could she be teething and so swallowing more salvia?