I'm 10dpo today and took this with FMU. The line developed after 3 min but less than 10 minutes. I should disclose that this is with the new curved FRER which has been showing a lot of false positives (can't find the old flat ones anywhere anymore!). I also took one yesterday and it was def. a BFN. I know it may still be too early but I had a mc back in June and would like to know if I'm pregnant asap so I can see my OB right away and get all my levels tested. Appreciate any feedback!