I've been hearing that first response test have a pink indent that people are mistaking as positive, but I'm still not sure. My first vvfl was on the 3rd and I've been getting them ever sense but the line isn't getting darker at all. I've been lightly cramping for all this time but no spotting or period. What could it be? I got blood work on the 3rd and my hcg was negative at 1 but they haven't called back for me to go take another one. Last test I took was on the 14th.