6m sick?

B

my 6m d son has thrown up twice within the last 12 hrs but hes acting normal and has no fever? idk if hes sick or if something else going on? idk why else he would randomly throw up. once was in the middle of the night randomly then next was around 1:30pm during a feeding . he drank 1 1/2 oz but threw up more than he drank. looking for opinions? anyone else had this happen? the first time he wasnt eating just sleeping.