People who actually keep records of such things have found that forced matings are pretty much a waste of their time. A doe that isn't willing is most likely not ready, and she will most likely miss.
You just got these rabbits; moving is a major stress for them. I have known of a couple of pregnant does that miscarried because of the stress of rehoming. Most people quarantine new rabbits for at least a couple of weeks (a lot prefer a month) before trying any breeding; any diseases or parasites that they may have been exposed to could take advantage of the rabbits' stressed immune systems, and it's always problematic to medicate a pregnant doe.
Rabbit does don't do a regular heat cycle like some animals, but they do experience periods of higher and lower hormone levels. Before you take a doe to the buck, turn her over, and press just in front of her vulva to expose some of the tissue that lines it. The color you are hoping to see there is a bright, cherry red. A doe that shows that color is at a hormonal peak, and most likely will breed readily. Some does never get darker than a deep rose color, so you kinda need to know the doe to know what you are seeing sometimes. If the color you see is light pink, put her back in her cage - she most likely won't breed, and even if she does, she most likely won't conceive. No point in risking getting yourself and the buck torn up. If the color you see is purplish, the doe has passed her peak; she might breed, but the litter may be small (eggs that have been held for a long time have reduced fertility).
