I'm feeling really discouraged. My FF app gave me the red line from my BBT's so we stopped dtd. A few days later, after I entered in my BBT and a screen popped up saying that my OD has been moved... to three days after the initial red line, when we already stopped. So I'm not feeling confident at all this month. What a bummer, but at least I know for next time, continue to dtd at least every other day for a good week after that initial red line.