Hallow Dear, Nordette is an oral contraceptive, commonly known as a birth control pill or the Pill . Nordette tablets contain two hormones (levonorgestrel and ethinyloestradiol), which prevent from becoming pregnant if taken correctly. It is a regular birth control pill and needs to be taken cyclically every day during cycle for 28 days for its effective action. These are not emergency post-coital pill; however they can give post-coital protection against the pregnancy if taken in double dose. If you have taken only single pill of Nordette as a Plan B pill, it will not give you protection against pregnancy. You statement after 11 days, I did not bleed is rather confusing. If you mean that you did not have withdrawal bleeding even 11 days after the pill, you need not worry as withdrawal bleeding, though common, may at times be absent, particularly with low dose. If you have missed your periods for 11 days. So you should suspect pregnancy and get your urine tested for pregnancy. If the results are positive, your pregnancy is confirmed. If this is unwanted pregnancy, you may opt for medical termination of pregnancy upto 9 weeks of gestation. However, get the medicines only by Gynaecologist s advice. I hope this helps you. Dr. Nishikant Shrotri