<s>[INST] Hi I have been on depo for approx 2 years.  I am 9 days late for my injection and I have had unprotected sex with my partner last night.  How long before I know if I am pregnant.  I am also due to get my injection today if pregnant what will happen to the pregnancy [/INST] Hi, Chat Doctor.  I welcome you to Chat Doctor VIRTUAL CLINIC. I have gone through your question, and I think I have understood your concern. Furthermore, I will suggest you the best possible treatment options. 1) First do not panic. If you are regularly on demo injections, then seven to ten days plus - minus will not affect your contraceptive effects of the demo shot. Also, return to fertility is not that instantly even if a woman stops taking demo shot.2) You need to wait for at least 2 weeks after unprotected sex to get the urine pregnancy test to show the results. 3) I will suggest you to take emergency contraceptive pill like I pill or Plan B within 24 to 72 hours of unprotected sex act. This will help to prevent the pregnancy. 4) Please do not take demo injection if you are not sure of the pregnancy condition. If taken in pregnant condition, it can have virilizing effect on the female fetus. I hope this answer helps you. Thanks.  </s>