AF was due 3/6!

Anna • 31. Married. Mother to DD after TTC 3 years. Have been TTC #2 for over 6 years now.
Hey everyone! I'm Anna, 22, originally from Utah, currently living in Maryland. DH and I have been TTC since April 2014. I had the nexplanon and had it removed before we started TTC. Since removal I've been slightly irregular (shortest cycle 30 days, longest cycle 40 but "average" 33 days). Glow predicted that AF would be due 3/6 and Ovia predicted today, 3/7. All BFNs so far and no AF. I did have one miscarriage but never had a BFP (even when I tested at 8 weeks), I only knew because I went to the doctors and they confirmed. I'm worried that will happen again (that I could be pregnant but that HPTs won't pick up on it?) Anyway, long post. I just wanted too see if anyone was in the same boat!