Hello, Thanks for sharing your health concern with us. In the current scenario, your cycle is no longer protected. I would ask you to go for a home pregnancy test a week after your expected period if you miss it. Since you have used the contraceptive irregularly, you can expect abnormal menstrual pattern. If you wish to have an earlier detection, please go for the estimation of the serum beta-hCG titres ten days after the intercourse since ovulation, if at all has occurred, cannot be predicted here. See a specialist for further help. Take care.