I've had provera before to delay a period and have some left. My periods are all over the place due to perimenopause and I tend to skip one/come on two weeks late then have a horrendously heavy one with flooding/needing to change pads every hour etc.
Just my luck to have skipped my last one and I'm due to go on a long haul flight today and am showing signs of starting...I know you're meant to take provera a few days before but I never know when I'm due so it's impossible. If I start taking them now will it help at all?