BFN without AF

Kelly • Finally had my rainbow baby in May 2017 after 4 losses! Grateful every single day for this miracle 😍👶🏻
My cycles are very regular and AF was due today. I always have some spotting before AF, and so far I had none. I felt light cramps exactly like when I was pregnant before (which ended up as a miscarriage). Did anyone here ever experienced a BFN even when they were pregnant on the day of missed period?