How far along were you? I'm wondering if it might might be something to do with breast milk? If you were quite far along then perhaps your breasts had begun to produce milk and now they're settling down. That's just a guess!
Otherwise, I would say it's probably just an hormonal thing. Sore breasts are a common PMS and pregnancy symptom so it could be that your hormones are all out of whack and just need time to settle.
i was at 23 weeks and got an abortion, but this was only a week ago, not even. and they seem to hurt more to any kind of touch. includng a bra. my appointment isn't for another week, and i want to know if it's all normal.