Help...

So I'm 24 been with my boyfriend for over 5 years we both live with my mum dad and sister I recently found out I'm pregnant and told my mum who literally told my sister and my Nan. My sister told me she was happy for me but then started saying that I need to move out and she's not giving up her bedroom. I'm only In a box room so this is no good for me. I don't feel ready to move out and now don't know about the baby. :( I really wanted to be happy about this but now I don't know how to feel :(