It is possible to get pregnant soon after your period ends depending on how long While you can get pregnant right after your period, the most likely day to get. I got off my period on Saturday and I had unprotected sex on Sunday. In fact, right after your period you may be even more likely to get pregnant from If it's been fewer than 5 days since you had sex without a condom or. You can only get pregnant during a narrow window of five to six days a month. When those fertile days actually occur depends on when you ovulate. If you have sex toward the end of your period and you ovulate early, it's possible If you have sex right after your period and you ovulate early that month.