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.
Instructions. Take Provera for 5 to 10 days when you want to induce your cycle. The cycle will start 2 to 3 days after you stop taking Provera. Provera is a drug used to regulate and induce a menstrual cycle.Other drugs include the emergency contraceptive pill, available in different brand names, and the day-after pill.ave. A normal menstrual cycle will be between 28 and 40 days. Some women are regular, and some are irregular. There are various ways to regulate a menstrual cycle and cause it to start early or delay its onset.