opinions on breast tenderness

So we have been trying for awhile now. This past month was no different and we did the dance around when I was supposed to ovulate. Confirmed by ovulation tests. It’s been 8 dpo and I’m having soreness in my breasts on the outer side all the way around almost up to my armpit. I’ve never have soreness with any of my periods.. I’m trying not to get my hopes up. When should I start testing?