I took a test yesterday at 10 DPO. It was about 6pm. The line was very faint. It was there but barely. I took another test around noon today at 11 DPO and the line hasn’t gotten in darker. It’s still very very faint. Is this a chemical pregnancy? Or is it too early and not enough time for the line to darken?

Side note. I am beyond nauseous today and have a horrible headache.