Breasts soreness

Breast soreness that comes and goes is pretty normal in pregnancy, especially in the first trimester, though it can happen throughout too. The darkening and enlargement of your areola is also a textbook pregnancy change, so those signs together are definitely normal. That said, if the soreness is really intense or you're worried about anything else, might be good to mention it to your gynae at your next appointment just to be sure everything is on track.