Ovulated early?

Dee • Our little sapphire due 12/9/15
 I have super sore breasts and sudden, quick, sharp pains in my uterus. I have never ever had sore boobs in the middle of my cycle, only a few days before I start my period. But I'm only 2-3 dpo and af isn't supposed to start until the 18th. I'm so confused! Could I have ovulate early? Did anyone else experience this?