Our baby was born last week and my partner is struggling with soreness from breastfeeding. One thing we have noticed is that the nipple (not the areola) is left out of shape post-feeding; it's oval shaped, it's not sloping off to the sides etc. so it appears the baby is centred on the nipple, but the shape is consistently that the wide points of the oval line up with the corners of the mouth, and the narrow points of the oval between the nose and chin. She is also describing spells of a sudden and hard biting/chewing type of sensation during feeding, and there is a bit of clicking noise as he suckles.
Is this oval shape indicative of a particular problem in the process? If the latch is good should the nipple come away from feeding rounded?