Whenever my baby girls legs are not in line with her body (laying flat) so when they are dangling or bent the go dark purple all the way up the leg , the longer they are down the darker the purple they go and will not return to normal colour until they have been lifted back in line with her body She is 7weeks old, this has been happening since birth but we could not get a pediatrician appointment till march, has anyone experienced this or could anyone give me some answers?