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.
Best Answer: It's considered normal for your period to take up to 14 days to arrive after your last dose of Provera. Personally I have taken Provera 3 times to start my period; two times I started my period the day after my last pill, and once I started 9 days after my last pill. I took Aygestin (another form of progesterone) this month & I've been spotting since yesterday (day 4 after the pills).