4 month baby spitting up milk. four soil diaper in 6 hours. cranky. no fever.chewing on everything. is it teething? upset stomach?. should i be worry

Teething/reflux: Gagging on saliva and perhaps a bit of reflux with teething may be contributing to your events. I would approach this with smaller feeds that do not overfill your baby's tummy. Rub the gums and maintain upright postioning after feeds. I would not use medication at this time since this might make the lining of the stomach irritated.

Cranky: Your child could be teething but is a little young yet.. He may be in pain as a result of gas being produced by your baby's loose stools.