I may have a pregnant rabbit please help

My baby girl, Nora, is 8 months old we have another bunny called Benji formally Bonnie as we thought he was a girl until a vet visit… we have tried to keep them separate while we save up for his neutering they are in 2 huge areas unfortunately we had an incident where she escaped and got into him and one thing lead to another and they had sex. Now she has prominent nipples, she’s really moody and she has a larger tummy. What should I do??