Last night my right breast became really sore and itchy and I couldn't lie on my side... It was only comfortable to sleep on my back then again this morning my right nipple is still itchy and sore... I just had my period last week so it's not that. My nipple is really red and looks a little swollen and I have a red line that's about 2-3 inches long coming from my nipple across my breast to my side. I'm only 17 so I don't really know if it's normal or what?