If your nipples are sore, dry, you can get some lanolin lotion or nipple cream from the infants/babe section of most department stores.

Sore t!dd!es from being groped too hard, or squeezed, even manhandled too hard is a bit of a healing time. The foods you need to help your body heal the t!dd!es need to be rich in calcium, vitamin c and even zinc. Make sure you're not allergic to any of these, but right now, the body needs healing time and nutrients.
Additionally, some vitamin E based lotion on the t!ddies will help rejuvenate the skin and the layers that make up your soft skin that covers your breast glands.

Just go easy on the t!dd!es until the soreness starts to ease up, no groping or rubbing until the soreness has gone away.