DS never spit up much from birth until about 9 months. In the last month he has started to spit up much more frequently and somewhat more volume. Just this morning he's spit up four times. He's only nursed so far, he hasn't had breakfast yet.

We talked to the pediatrician and she kinda brushed it off and said it might just be that his tummy is too full and when he is moving around and playing he is squeezing stuff up. He doesn't seem upset about it. It just seems strange and I thought spitting up was supposed to get better, not worse, as babies get older.

Anyone have any experience with this? Should I be concerned?