Mummy, honestly muntah memancut like that plus perut kembung sounds like it could be reflux or susu memang tak suit your baby's tummy, a few of us mums went through this jugak, and it's scary when they keep spitting up! Since doctor dah warned about drip if it continues, I think you should follow up with the paediatrician again before trying another formula, sebab boleh jadi bukan susu je, mungkin ada reflux issue yang kena address. Kalau confirmed susu problem, some of my friends swear by gentle formulas or the hydrolysed ones, tapi that's really a doc call lah, they can guide you on which brand suits baby's digestive system best. In the meantime, coba tengok feeding technique, sometimes overfeeding or burping position boleh jadi culprit jugak.