Ovulation?

Me and my boyfriend have had sex almost every other day. On the 14 we had sex when he pulled out I'm pretty sure he came but not 100% sure. He didn't say anything and went back at it and I was soo in the moment I didn't question it. But my breasts are supper tender last night and today. I've never felt this during ovulation just before my periods? Does it change every ovulation?