How dangerous are three pills only of Misoprostol 200mcg on a fetus in its seventh week of gestation?

Three pills of 200 mcg of misoprostol if taken all at once is 600 mcg. That dosage is high enough to cause the fetus to miscarry. Even one 200 mcg dose of misoprostol taken at 7 weeks gestation is likely to cause a miscarriage. It is a dangerous drug to take if you wish to stay pregnant!