I also have a decent knowledge of hormones as my thyroid levels haven't been perfect before so i've done research. In doing so you discover many factors and variables can affect hormone levels. And reading queenies OP, it would seem everything she has described from the flushes to appetite even to sugar levels can all be affected by hormones. And everyone knows contraceptive pills play havoc with them, so coming off of a pill you will notice a lot of differences.
Regarding the cycle, being on a pill will prevent a natural cycle (obviously) so i assume discharge would be consistent. Now off of pill and hormones changing, cycle starting to turn again, it is to be expected that the consistency of the discharge will also.
If queenie is worried, or would like some serious medical examination, i'm sure she can visit her GP