Justme:
I wasn't ttc when I had my 2 children, they were "unplanned" so I did not test until I was a week late with AF and they were very dark lines so if I'm preg you'd think the lines would at least be showing faint.
I thought there was something wrong with the tests too so I went and got some equates and still bfn

I'm going nuts. I'm tesing in the morning, probably tomorrow night then lastly Monday morning and if nothing, I'm calling my doctor for a blood test because I want to find out why AF is not here if I'm not preg.
Good luck to you getting your BFP!!