I think you should definately go and speak to your council hun. I moved back with my parents a few years ago, with my little girl, and because their house is a 3 bedroom, and there wasn't any spare bedrooms for me and daughter, I went to the council and said please help, I'm staying with my parents and it's overcrowded and my mum has asked me to leave. The council rang my mum and mum had to write a letter saying yes she'd asked me to leave, and they put me in Band 1, just had to bid on properties each week until one came up that was suitable. It didn't take very long at all. Oh, can I just say that I had to practically force my mum to say she was kicking us out! She wasn't very happy with having to say that at all, bless her. But it worked in the long run. Hope you get sorted before baby gets here.
xx