my son is 20 days old and since he was born his lips were blue and the doctor at that time its normal and it will go away on its own after 20daya still his lips are blue what could be the reason

A. Mam if your doctor saying it is normal then it would be normal only I would just recommend you to wait for a month more if you don’t keep changing then you go for further assessment but as of now it doesn’t seem like a problem and I have already discussed the issue with the doctor so it should be normal only