I’m 6 days late and the last 2 days I have had light brownish discharge accompanied with lower back pain and dull cramping. On the 1st I had bad cramps so I figured I was on track to start on the 3rd, but nothing ever came. Here’s a picture of when I ovulated, but I’m terrible about marking when my husband and I have sex. There were more times before (I know that’s not helpful). I’m always a couple days “late” so keeping that in mind I’m 6 days late. I’m also so tired and have had a dull headache for a few days!! I took a pregnancy test yesterday morning and this morning and they both said negative...Thoughts?