My 3 month 7 days baby is exclusively breastfeed he started spitting from past 15 days. After each feed. I lay him down after he burps immediately. He generally burps with in a minute n spits a bit curd kind and I lay him down. When he lays down he spits little more and then I hold him for burp n he burps again and this happens 3 to 4 times sometimes. Sometimes watery milk also spits up and again I hold him for burp and he burps. He is gaining weight properly. Please suggest if it's normal