Hello, I started crying with saliva in the morning, then fed him after…

Hello, I started crying with saliva in the morning, then fed him after 10 minutes and he threw up milk, after half an hour I fed him again and it was thrown up again after 10-15 minutes, there's no diarrhea or fever. Yesterday at 11 he ate soup and after 10 minutes I put him to sleep because he was capricious and wanted to sleep, in the evening at 7-8 we went for a walk, I think it blew?? Can't be intestinal infection? He eats everything normally, now he is sleeping.