I understand they are very common, most women don't even know they had one because it comes out with your af. But for gals like us we notice because we test early. My question is was your line ever dark and you had a chemical? I've noticed even in my friends test who had chemicals the line was VERRY faint. Is that because it was a chemical or can you get normal super obvious positives and still have a chemical (not a miscarriage)?