My one month old is constantly grunting (pushing) to the point where he turns red. Sometimes he throws up because he is pushing so hard. Is this normal?
I started him off on Similac optigrow formula, but noticed he was always constipated and gassy. I recently switched him to infamil gentle ease and the gas has gone away but now his stoole is loose and very irregular.
He still continues to push/grunt so I'm not sure if this is an issue with formula or if this is normal for babies?
Note: Baby is still putting on weight and grunting/pushing doesn't seem to cause any pain as he does not cry.
Should I change formula? If so any recommendations?