I've had a pain in my breast for two weeks that feels like a sore, burning pain under my nipple when I make certain movements. See doctor or wait?

No mass? If you cannot feel any swelling or mass in your breast, and it is just a pain, then i would probably wait until you've finished your next period, and if it's still there at that point, i'd see a doctor. If you feel a mass, or if there are any visible skin changes, see a doctor now.