Sore Breasts at 2 Weeks Pregnant?

I haven't tested yet but i will be in a few days. It's been 2 weeks since I had sex and I am experiencing very tender and sore breasts more than usual. I would chalk this up to early menstrual cycle symptoms but my cycles are always pretty regular and I never get sore breasts, especially like this a week in advance. Just wondering, has anyone who has been pregnant before tell me if they've experienced this too? Or is it too soon to even tell?