This morning I noticed that my nipples are a lot darker than usual. I asked a friend about it and she said that she sometimes experiences this right before her period. I've never experienced this as far as I have noticed. I know that it can also be a early sign of pregnancy. Besides pregnancy and periods, is there anything else that could cause this? I am 19 years old, married and on the pill, but have missed a couple of pills recently. Lately, I've been very exhausted and bloated, and my breasts are very tender and appear to be bigger/swollen. I have always experienced tender and swollen breasts right before a period, but I don't start again for another 3 weeks almost. 2 months ago I was a day late on my period and this past month I was a week early? The last period was very different than usual, the day before I started I was spotting and then the next day (the day of) it was very light and lasted maybe 2/3 days, but it was extremely light the whole time. Other than that, I have been producing a lot more discharge than normal and have been nauseous. I have been experiencing a lot more nausea in the past few months so I haven't really thought anything of that. I took a pregnancy test after my last period and it was negative, but I know the at-home tests aren't always very accurate. I appreciate any help anyone can give me.