Help me

Patient: Dear Ask The Doctor: My girlfrnd missed her one month period after we have unprotected sex on this month 10th, she get regularly periods on 21st but she didnt get still now that means is she pregnent, if pregnancy means can i use Mifepristone 200 mg for abortion, is it safe to take at home without prescription.please tell me is it safe for my girlfrnd or it causes problems in future