What's wrong with my Areola and Breast?

Hi im 18 and recently I had my bf play with my breasts. It's been 5 days since then and I fell asleep last night without a bra on. Usually I sleep on my stomach. Anyways, I woke up and I felt a sting/pain below my areola, and part of my breast. I'm not sure if it's because my bf played with them too hard. Or was it because I slept wrong on them. I'm not sure :(