So I started my period the other day and I wasn't supposed to start until today. I was really hoping this month would be…

So I started my period the other day and I wasn't supposed to start until today. I was really hoping this month would be our month. I'm just kinda confused about my period, I started almost a week early which doesn't happen with me if I'm not right on time, I'm late. The whole time my blood has been darker than it normally is. And I have very mild cramps if any at all, I usually have cramps worse than this. This period just doesn't feel normal to me. And my boobs or nipples never hurt, but this time my nipples have been sore or tender to touch. Can anyone give me any kind of insight or advice?