Ok so I have had an IUD for about 2 years now and I get my period every month. For some reason this month I didn't get it. It is usually around the 1st to 4th day of the month. I took 2 pregnancy test in the past 2 weeks and they were both negative. Since yesterday I have been getting a light brownish discharge. Not alot, mostly when I wipe. So should I ask my doctor about it? or is it my period? I am just not sure. I have a feeling I am pregnant but am on birth control.