I also think that it is important to determine how far along the pregnancy is before attempting any of the home remedies.
There are several options and methods to choose from. Lets go back to our sample scenarios, and say that one of our subject's pregnancy tests came out positive. She had purchased some ascorbic acid and some Dong Quai capsules while out shopping form pregnancy tests to have on hand just in case.
Now with a positive test she breaks them out. Because her period is due in the next few days her chances are good that she will be able to get menstruation started. But just in case she makes an appointment at the abortion clinic. She starts with the vitamin c using abortifacient doses, 10 - 12 grams per day - divided into 500mg doses (1000mg = 1 gram) taken every hour. Taking 1500mg before bedtime and setting the alarm to go off 3 hours later to take another dose. She continues this for 3 days, menstruation is now due, but there is no sign of bleeding, which is not uncommon because if usually takes a minimum of 5 days of self-treatment in cases of confirmed pregnancy before bleeding will begin.
On the 4th day of self-treatment she adds 1000mg of Dong Quai taken every 4 hours. The reason for taking the vitamin c for a few days before adding the Dong Quai is to give the vitamin c a few days to deprive the uterus of progesterone, which should weaken the eggs grip on the uterine wall. This way when the Dong Quai is added and the uterus is stimulated and contracting it should be easier to knock the egg loose and get menstruation started.
She can continue taking this for up to 10 days. 14 days if she really wants to or thinks it is worth it. If she wanted she could add a tincture of black cohosh for the final four days before throwing in the towel and falling back on Plan B, the abortion clinic.
If bleeding begins on its own - once bleeding is flowing like a normal period she would discontinue the vitamin c & herbs.
If spotting starts but does not seem inclined to become a full flow, our subject could do one of two things, she could encourage her uterus to contract by having one or more orgasms. Or she could add an extra one time dose of the dong quai. She could also do both, to try and get the blood to flow more like a regular period, then herbs and vitamins would be discontinued.