Three or so days. After that you can get pregnant.
The birth control pill does not change how long depo provera stays in your system, and doesn't get it out of your system faster.
taking a pill
really it all depends on your body. I was on it for a while and stopped taking them, my period was actually like a normal cycle.
The birth control pill gets out of your system within a couple of days. (That's why you have to take it daily -- it doesn't last very long). Your body will take over the hormonal cycle again within a few weeks. There's nothing that will speed this process.
Most pills stop the ovulation cycle and this means that for women who suffer from bad PMT, taking the pill improves their moods. Stopping the pill will allow the cycle to restart.
An estrogen pill will make your breasts bigger as long as you keep taking the pill. If you stop taking the estrogen pill then your breasts will stop growing.
Yes - if you want to be fully covered for that cycle.
You start taking the pill at the end of your period, and then, yes you will not have a period again until the break in the pill.
If you're already on your period then the pill may reduce the flow of your period but will not stop it. However if you're not on your period you can stop your period by taking the pill but it isn't advisable as a permanent thing.
a week
It is not effective. You can get pregnant .
It's unlikely.