Good morning. I had unprotected sex on my 18/19th day and on my 23rd day of my menstrual cycle, both of which I took prostinor2 within 12 hours after intercourse. I'm now on my 31st day and my periods isn't here yet but I am getting menstrual cramps slightly as well as nausea and tiredness. Are these side effects since I took p2 twice within one week and how soon will I expect my periods. ..I am honestly not ready for another baby so I'm a bit nervous here. Please help. Thank you.