My 5 month old baby girl was sleeping well through the night. Last feed about 10pm and then into her own bed and most nights would sleep through until 7ish. Lovely 
Then she got a cold, point blank refused to sleep in her own bed so we let her co sleep. We did this the odd night when she was new born but this is the longest stretch of it we've done. Its been well over a week, her cold is much better but she still won't settle in her own bed. When she's co sleeping she has a few little breastfeeds in the night but, before her cold, she would sleep through without wanting a feed. I don't want to carry on co sleeping, our bed isn't big enough and she was meant to be going in her own room in a few weeks! Has she got used to cosleeping and decided she prefers it? Can babies that young even think like that? Or maybe she is still getting over the cold a little bit?