Acid reflux?

My baby is almost 6 weeks, he’s breastfeed and supplemented with formula (enfamil) I noticed that even tho I burp him he still gags sometimes & spits up here and there but justly gags... being a ftm I’m not sure what it could be other than what google said. Is it something to be brought up to his dr at his 2 month check up or is there some kind of drops to help with that? What did you do to stop it ?