A women can get pregnant at ANY time during her cycle - it just depends on when she ovulated that particular round.
If you are on birth control pill, I would say No, because the pills makes you stop Ovulating. If you are not on anything, I would think there could be a chance. As the "little swimmer's" as stay alive in you for 3-4 maybe 5days. And if you O in that time then Yes you could. But most women, I dont think O that soon after Af (period).