s the progesterone after
ovulation that causes tender breasts, but high
estrogen levels can also cause tenderness, it's just not as common. Personally, I always get tender breast after ovulation and until AF arrives (when progesterone is dominant), but I have had a couple of cycles where they got sore before ovulation (when estrogen is dominant). I'm not sure if that's what's going on with you, but I agree with GiGi, take another pregnancy test...just in case.