I went off the pill about 3 months ago, and have had 2 periods since then then that were close to the date I expected. However, this time I am almost 2 weeks late and have still not gotten my period. Today I noticed some brown discharge and even some small clots. I don't have cramps or anything, but am wondering if this probably my period? Or is it something I should be more worried about? I took a pregnancy test after I was a week late, and it came back negative so I think I can rule out pregnancy?