Hello dear I understand your concern Cinnamon powder does not help in preventing implantation and pregnancy. How can you tell surely that implantation will occur in next 7 days. You can take I pill with in 72 hours of sex to prevent the implantation/pregnancy. If 72 hours has been crossed then wait for the period to come. If period will delay by the 8-10 days from the normal expected period date then go for urine pregnancy test and or blood HCG to confirm the pregnancy. If you will be pregnant then still you can terminate the intrauterine pregnancy by abortion pill under the advise of the gynecologist. Avoid stress, take healthy diet, drink plenty of water and do regular exercise. Hope this may help you Contact HCM for further health query Best regards Dr. Sagar