First off I just want to state I am on birth control and I have not missed a day and every month I get it the same time. This week I am suppose to be on my period but I haven't gotten it yet. I did have some cramps, tender boobs which I usually get when I'm about to start and still nothing. I did have very faint brownish/red when I went to the bathroom but it only shows up when I clean myself. I am not stressed over anything and nothing dramatic has happened in my life to cause any stress. I took a pregnancy test today and it came up negative. I'm confused and a little scared, could anyone please give me any advice?!