Its advisable to let ur doc see it since u are pregnant. The treatment will depend on the degree of d cracked nipple. Then once u deliver, tell ur midwife to teach u proper positioning of baby while breastfeeding, this will help prevent cracked nipples during breastfeeding.

Sorry,It depends on the type of mastitis (i.e sore breast). Note that it could be Non-infectious i.e when build-up of breast milk irritates the breast tissue, making it become red, hot and swollen. It could also be Infectious. This is when the build-up of breast milk becomes infected and the infection spreads to other part of the breast. If it’s infectious, you might need an Antibiotics can usually cure mastitis. Make sure that the drug is prescribed by doctor. Also make sure you take them as directed.Never stop taking the antibiotics because you’re feeling better. You need to take the full course of pills.