Hi!
If you were my patient, I would wonder about two possibilities--the first would be simple dry skin which might respond to a standard body lotion such as Eucerin. The second thought I would consider is candida--for this you might want to try one of the over the counter yeast products such as Nystatin cream. Monistat might help too. If you are not getting relief--your doctor might be able to provide a script for Diflucan which is safe during pregnancy.
Good luck!
Dr B
You could rub alcohol pad around the nipples tht usally helps