​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​AF was due today, tested yesterday at 10 DPO and got a BFN...Should I test again tomorrow at 12 DPO or just wait for AF(another app say AF is due on the 20th)