advice needed!!

So a week ago today AF was due I took a clear blue test and there was a faint line, I got a bit excited then AF showed on Tuesday so I thought I was out this month. It was just brown light spotting for 2-3 days then nothing. I don't know why but I just took another test with my second urine of the day before with a clear blue and I can see another faint line. If I was pregnant all this time wouldn't it be darker by now? I'm going to use a pink dye in the morning to make sure but is it still possible I could be pregnant? I'm new to this TTC!