I'm 5 weeks along with my first and I have had sore breasts/nipples for about a week. I've noticed that some days they aren't as sore as others, or some days it looks like my nipples are getting darker, then the next day not as much... weird? Anyone else notice your breasts are really sore one day and not as much the next? I feel nervous when I'm not in as much discomfort because I feel like as long as everything is going well, it should be getting worse!