Drink parsley tea if you want to bring on AF.
You need to seep a heap (about a handful) of it in boiling water for 10 to 15 minutes. Drink a cup every hour of this during the day. It needs to be very strong to bring on AF. It is best to use fresh parsley. Don't use dried parsley.
The taste maybe a tad awful, but it will work. You may find by using this method, when AF does come, you will be very crampy due to forcing your body to bring on AF. You only need to do this for a day or two to work.
Hope that helps