^ tests are accurate 3 weeks after sex, and I agree, in the future either use condoms when you’ve messed up taking your pill or switch to a less user error sensitive method of birth control.
I also recommend you stop using flo when on BC, if you’re using the pill correctly you do not ovulate, if you use it incorrectly and become unprotected you may ovulate (but no way to know for sure) so those apps are completely inaccurate.
Period tracking apps are only guesstimating at tracking ovulation even when you’re not on birth control, to accurately predict ovulation you need to be consistently tracking basal temperature and maybe also taking ovulation tests.