Aiyah, my dear, that's definitely something worth checking with your paediatrician because sedu dan muntah after feeding isn't super common, could be reflux, tongue tie, or feeding position issues, all things the doctor can help figure out. A few of my mum friends had similar worries and it turned out to be something simple that could be sorted, so don't stress yourself too much lah, but do get it checked sooner rather than later.