Nurse frequently - at least every 2 hours. This will ensure that your baby does not become too hungry between feedings causing him to nurse ravenously and aggressively at your breast.
Hand express or pump a few minutes before the feeding. This will elicit letdown and elongate the nipple for the baby so that he does not nurse so aggressively.
Nurse on the least sore side first as this is the side that your baby will nurse more aggressively on.
You may want to take a mild pain reliever about 30 minutes prior to nursing or around the clock until your discomfort lessens or disappears.
Open both sides of your bra during the feeding.
Consider applying warm, wet tea bags to your nipples for a short time after nursing.
Warm, moist compresses (wet washcloth works well) often bring relief to nipples both before and after nursing.
After feeding, pat dry your nipples and express some breastmilk to rub into them (this should be avoided if you have thrush as it thrives in milk). Breastmilk has Vitamin E in it which is very healing to the skin. Note: Avoid applying Vitamin E oil from a capsule to your nipples as this can be toxic to your baby!
You also may want to apply a 100% USP modified lanolin preparation, to your nipples after nursing. Apply enough to thoroughly coat the entire nipple/areola area. This does not need to be washed off prior to nursing as it is safe for baby to ingest. Recent studies seem to indicate that using 100% lanolin may hasten the healing process by maintaining the internal moisture of the skin. Avoid other creams and ointments sold for the treatment of sore nipples as these may actually impede healing by preventing air circulation and drying out the skin. Some of these other preparations may also be toxic to your baby and will need to washed off prior to nursing. Over-washing of the nipple area results in a loss of the natural lubricants that protect it and provide it with antibacterial properties.
Some moms find a hydrogel pad soothing and healing to nipple trauma.
Change your nursing pads immediately once they become even slightly damp. Moisture up against your nipples can prolong healing. If your pad sticks to your nipple moisten it with water before attempting to remove it. Also avoid nursing pads with plastic linings. They prevent the flow of air which is essential to healthy nipples. Stick with 100% cotton pads or pads made of plain paper.
If your nipples become so sore that you cannot tolerate the pressure of your bra or clothing on them and it is painful for you to hold your baby, you might want to consider wearing breast shells inside your bra to protect your nipples as they heal.
HTH