As you have missed periods, you should get the pregnancy
test done and then consult a gynaecologist.
You will need to get a USG done to localise the site of pregnancy and exact gestational age
. Depending on that the correct method of termination will be advised to you by the gynaecologist, either medicines or surgical by curetting.
Please dont do self medication
With one medical abortion
, generally future pregnancy chances are not affected, if it is uneventful.
Also, i would like to suggest you to use some other form of contraception
like OCpills with the advise of your doctor.
Hope this information is useful.
Dr. Mrs. Sumeet Baheti