My daughter is 4.5months. She recently started making a grunting noise. Every-time our hands are close by her mouth she grabs them and shoves them in her mouth while making those sounds. She constantly shoves her own hands in her mouth chewing on them. She grunts and then almost sounds like whining but not crying like something is bothering her. Is this a sign of teething? & what’re ways to help her feel better? We’ve also tried teethers she hasn’t completely figured out how to use yet.