I was just wondering if anyone might know what this is. I had my period right on time about two weeks ago, usually my period lasts 5-7 days but this one lasted one day. Now two weeks later, my breasts are tender and i have had a slight brown discharge for two days, like you get before your period starts? I took a pregnancy test and it was negative so im not sure what else it could be. I am a bit crampy and tired and feel like how i usually do before i get my period???