As a reminder (to all), the topic of intentional breeding is prohibited on these forums. Because of this, many Binkybunny users (including myself) are not very knowledgeable about pregnancy.
From the little I know, you won’t really be able to tell if a rabbit is pregnant until later in the pregnancy (similar to human females; signs take time to develop). Taking your rabbit to a rabbit-experienced, exotic vet who has experience with rabbit pregnancy could give you one of the best assessments of whether your rabbit is pregnant. There are also other online forums, such as rabbitsonline.net, which have users who are more experienced with this and may be able to give you more informed opinions and recommendations.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.