I purchased 2 bunnies(dutch 6 wks old & mini rex 8 wks old) in May.I was told both were females.They have mounted each other and people say that's normal. My dutch is pulling her fur and carrying hay in house. I noticed it 2 days ago. Hasn't done it again. Checked my mini IT'S A BOY!!!.How do I know if my dutch is really pregnant, and are they to young to have bred?I need time to build another cage.Any input is helpful . Thanks in advance.