All Of a sudden my 12 week old started spitting up thick Chunky creamy formula while taking his bottle during burp breaks. He burps well over my shoulder but the liquid just comes pouring out. Sometimes more than other times. He’s eating the same amount and it’s the same similac pro-sensitive that he’s been on for over a month. He doesn’t cry or seem uncomfortable. No back arching. He does put his hands in his mouth all the time but I read this is normal for his age right now. We have been increasing his tummy time lately. Is this reflux or normal baby stuff? I’m calling the doc on Monday.