Hello, One of the most common side effects of Levonelle (and also all emergency contraceptives) is a pain in the lower abdomen, as you prefer to have. There is also some other common side effect which maybe you will experience are bleeding until the next period, nausea, tiredness, headache etcetera. So, in my opinion, you are having the side effects of Levonelle. If you don t get well after three to four days, you should go to the doctor. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Eniola Memishahi