My throws up at every breastfeeding and he passes a loose poop with white seed is dat normal or should i be worried, my baby is nine months old?

Depends: I'd really like to see how your baby's growth has progressed in order to answer this! If you could input a height and weight it will help! Seedy stools are perfectly fine. As for the throwup, it depends. Is this a small amount of spitup with each feeding in a baby who is chunky and well grown, happy, and a mom with a robust milk supply? Or is this a baby with painful feedings and poor growth?

Baby feed spitting: Depends on several things such as is the baby growing well? Does he throw up,solids? If he is growing well there probably is no concern but if not I would see a healthcare worker