Hi, Thanks for posting in HCM. I understand your concern. Marvelon tablets are a type of hormonal contraception, which contains two active ingredients namely ethinylestradiol and desogestrel. Marvelon can be used as emergency contraception. Dosage to be taken is as follows: 1. First dose of 4 tablets each within 72 hours of intercourse. 2. econd dose of another 4 tablets to be taken after exactly 12 hours of the first dose. Hence, what you have done is right. It would offer about 95% protection additionally against unwanted pregnancy. The only problem with use of such pills as emergency contraception is less patient tolerance. Nausea, vomiting, headache, dizziness, fatigue, breast tenderness, menstrual problems are the common side effects. Any delay in the intake of emergency contraception does not guarantee protection from pregnancy. Period may be delayed for 1-2 weeks due to hormonal imbalance, caused by taking pills just prior to your period due date. You need to wait at least one week to get withdrawal bleeding. In case there is delay in getting periods for more than 3 weeks from the day of intake of the pills, you need to seek medical attention immediately. In addition, you need to maintain a healthy lifestyle and avoid mental stress till you get your periods. Hope the information provided would be helpful. All the best.