So I am 8 days late for af. I have a very regular cycle. I should have started last Sunday. I started spotting dark brown on Tuesday last week. Not even enough for it to get on my panties. I wore a pad every day because I just knew it was going to start any day. On Wednesday there was a little tinge of pink when I wiped but that only happened one time after I went to the bathroom. I took a digital test in Saturday night and got a bfn. Are the digital test as sensitive as the regular ones? Should I test again? How much longer would you wait. Its all I can think about.