Make sure to feed in the correct position and burp for 10-20 mins correctly. Spit up and vomiting after feeds is a sign of overfeeding or improper techniques. If baby is active and drinking breast milk or formula feeds well, with adequate weight gain and developmental milestones, then no need be concerned. For techniques, you can book a call with me or visit your local Pediatrician. You can follow me on Instagram @pediatrician_india for more helpful tips ! Take care !