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You have not mentioned how many months she is pregnant. If you had intercourse on 8th of September 2010,and if she had conceived then, she should already have delivered the baby by now.
If you have made error in mentioning the month, there is no other way but to consult a gynecologist, get an ultrasound
scan done to confirm pregnancy
, location and duration of pregnancy and only then proper method of terminating the pregnancy can be decided.
There is no home remedy to terminate pregnancy.