rabbits dont show symptoms of being pregnant :? i have read that there is sometimes a behaviour change in the rabbit which normally shows after the 2nd week (roughly) in behaviour change i mean aggresiveness e.g. lunging at you when you opentheir cage/hutch, grunting at you, kicking violently when you pick her up.
was this a planned mating? if not i would get you buck neutered now to stop thsi from happening again and ifthis was a planned mating i would like you to know that this is a rescue site and most of us are against breeding from the already high numbers of unwanted rabbits in rescues and shelters.
sorry if i have offended you in this post it really wasnt my intention.