refusing milk

Initially baby was on similac the blue tin when he was newly born. Than he had phelgm and had difficulty passing motion so I changed to karihome. He drank well but always having bad reflux and vomits out digested feed afta every feed. Ydae I bought similac total comfort. When I gave him, he moved away from the teats. But he still drank the milk. How to tell if my baby likes the milk? Or should I continue to monitor him? Wanna bring him to pediatrician but my doc is out of town till march. Pls advice mummies. TIA ❤️ oh he is 2 months and a few days old.