I took a test a few days ago and it was a very very faint line, barely visible. I took another today and still a very very barely visible line again. Is it possible that there's just not enough HCG in my system to get a dark line yet? The line today was darker than the one a few days ago. I can clearly see it in person but in a pic it is hard to see. I am hoping and praying so hard that this is my rainbow baby!