Hey TD.... sorry your question was not answered sooner, but i am only online at night

and life for us women gets so hectic
anyway..
the ox will NOT negate her bc.. however it can slow down her periods or stop them.. as well as lowered bodyfat.. both have an effect on menstration..
Ox can go both ways.. she may experience spotting, or she may experience lessened periods.. I personally get smaller and less painful periods that last 3-4 days tops and some months i don't get it or maybe for like 1-2 days.. it is quite erratic while on Ox..
Hope this helps