YES! sometimes my neck too. I thought at first he was trying to give kisses but no, teeth are there and it hurts. I’ve been told it’s because of teething, but I don’t see any new teeth coming through.

Teething where a teething ring to hold might help. Or at young infancy sensory motor stage where the mouth is used a lot for taste and feeling. This is normal.

If it is because they are teething then there’s a possibility

If baby is teething, baby will be biting anything! You don’t mention baby’s age so it’s impossible to say if it could be related to teething