Generally, it takes between seven and 10 hours for a dog to digest food, but the many variables mean that only your vet can tell you how long it should be taking.
But how many days after Provera will your period start? When using Provera for amenorrhea (absence of menstrual periods) or abnormal vaginal bleeding, the medication is taken for 5 to 10 days. Menstrual-like vaginal bleeding usually occurs three to seven days after treatment ends.
Usually not: A good time to get the Depo Provera injection is during or right after the period, because it is very unlikely a woman will be pregnant when having a normal period. The shot takes several days to take effect, so by 4 days after the Depo Provera injection a woman should not be able to get pregnant.