I have a 15 day old female who is not putting weight on her front left paw. She is the youngest and only girl in a litter of 4. She is the smallest but has been gaining weight at a steady rate (although the boys seem to be getting bigger faster) and was the first to open her eyes. I first noticed her not putting weight on her leg late last night and moving around a little awkwardly, but I wasnt sure and today she is the same. She will touch the ground with the paw put not put her full weight on the leg like she had been before. Should I take her to the vet? I am new at this and not sure what to do! Please help!