Hi, Don t be stressed. Are your mensus regular? What time in your mensus cycle you had sex? If you had sex in the first and last week of your mensus cycle there is no need to worry. Pregnancy does not happen during this time. What did you use for protective sex? I presume the partner must have used Condom. If it is been used correctly your chances of pregnancy are very less. Do get a pregnancy test done. Postponing things is not a solution. If you are not pregnant ( of which there is a significant possibility) you will be happy. If you are pregnant consult your doctor at the earliest and get medications for medical abortion. i hope I have answerd your questions.