Within 24 hours the doe usually knows if she's bred. This last time that we bred our Polish, we waited until the next evening to re-breed (we usually only wait 4-5 hours). All three tried to attack the buck this time, and they were pretty receptive the day before. As it turns out, all three had litters.
One of our Tans that we palpated after two weeks, we thought didn't take, so we re-bred her at that 2-week mark. She wasn't happy about it and grunted, but didn't attack the buck. As it turns out she had one kit 2 weeks later and THANKFULLY had nothing 2 weeks after that. It can be hard to feel anything when they only have one kit in them...but we learned our lesson!