Hi everyone - I am new to this site but would love your knowledgeable input. 

My 3 yr old golden seems fine all day - very active, acting great, and wants to play - but the last few nights she has been limping after she's been laying down. Once she is up and walking a few steps, she seems fine again.  At first I thought she hurt her paw and didn't want to put pressure on it, but I couldn't find anything wrong. 

Thanks for any help you can give.