It's totally normal, try not to worry! I remember being freaked out about the same thing during my last pregnancy. My breast and nipple soreness would fluctuate, and I would fear the worst. This happened the whole 1st tri. I heard that it's very normal for symptoms to fluctuate, as long as they don't dissapear altogether, and that it's more commomn for breasts to hurt less with each consecutive pregnancy. Gl, I'm sure everything will be ok!