I wanted to breed my male and female chinchillas so, I put the male in the female's cage. He has been in there since November and I don't know if my female is pregnant. I thought she was going to have them the end of April so, I took the male out but she never did. I felt her stomach and it feels like she is pregnant but she is a big female. So, I put my male back in her cage so if she never was pregnant, she would get pregnant. How do you tell if she is pregnant???