My baby is 4 months old and seems when we sit her up on an incline, her head is always tilting to one side so her neck is never perfectly straight. Is this normal as her neck is still developing or is it something to be concerned about?
This is called torticollis - when the muscles on one side of the neck are too short or too tight. It can usually be overcome with physical therapy. Defintely see your pediatrician about it and see if you need a referral to a specialist.