BFP or BFN?

Hope Faith • I`m 29 and happily married.. 4 MCs. Rainbow baby born Nov 2016. Rainbow Baby #2 due Oct 2018. Mommy of girls! PCOS warrior.
Has anyone ever only got a BFP after a missed AF? How many days after? Or always got a BFN on a hpt but in fact pregnant? Were any of these pregnancies healthy?