Bloody mucus could be implanting if you have very short cycles/early ovulation, though at 10 days post its unlikely.
It could be old blood from AF, it could be the egg having come out of the ovary.
For me when trying for #1, it was lots of CM (egg white, long and lots of it), cramping mid cycle (then days 8-10, that cycle around day 16).
Since #1 I've had no consistent signs at all, so no way of saying when it's happening.