My 3mo keeps projectile vomiting after feeds - is this normal or should I be worried?

So my son is almost 3 months old and started doing this thing where he'll spit up like... violently. It's not just a little burp either, sometimes it shoots across the room. We switched to Enfamil A+ thinking maybe it was a sensitivity thing but it's still happening. Pediatrician said it's probably reflux but didn't seem super concerned. Anyone else dealt with this? Does it eventually stop or are we gonna be doing laundry 5x a day forever?