I'm 5 days late and have been having headaches every day for the past week! I was on birth control last month but forgot to take a few pills. I've taken 6 pregnancy tests all negative! Today I was reading through these posts and saw people saying not to use the ones with blue dye? That's what I've been using is there a reason not to use those? I def thought I was pregnant because of the headaches, nausea, and sore boobs. Would love some input!