I'm small in the bust too but I've not had problems. DD still feeds 3-4 times in 24 hours though.

Has anyone had this as a problem once their bubs seriously cut back on a couple of feeds- if DD has skipped a feed or gone longer between feeds - usually because I've forgotten to offer and she's not asked- when she does later feed she often throws it back up. Actually I don't know if the vomit is actually due to this but I had a theory that my milk by then has built up thus has a strong flow, she hasn't fed in a while so guzzles it down and it's too much too soon for her. Or maybe it's not related to bf at all... She goes through phases lately where she seems to be miss chuck-a-lot.