I'm currently 17dpo(I have a 25 day cycle) & have had extremely faint positives for 4 days now, with AF being due a few days ago if all calculations are correct. The lines haven't gotten darker but are still appearing within 2-5 mins. I'm booked to the dr tonight. Has anyone experienced similar & had a good outcome? I have been really nauseas for 6 days, which prompted me to test earlier than I was planning to, however because they aren't getting darker I'm worried it's not going to progress.