Plady, extra TLC was the only thing that seemed to help my girls through that breast bud tenderness. It does pass eventually. I noticed that it came and went cyclically for several months before AF arrived for them, maybe longer, I can't remember exactly now. I took it as an opportunity to teach them more about self care. Yes, it hurts, and why don't you make a cup of tea and curl up with a good book, bake something or watch a favourite movie with someone else.
Had a long day today and I am up far too late tonight but once everyone else went to bed I watched three episodes of Call the Midwife and crocheted. Just what was needed, at least equal to sleep.