My baby doesnt want mommy

I have left house at 6am and come back at 8pm for work since my baby was 2 months old. He has been taken care by fulltime nanny. Now he is 6 months. I can feel that my baby love nanny so much. When i carry him, he cries. But i gave him to nanny, he stopped crying immediately. When he is on the bed and seeing nanny not carry him, he will cry. Anyone get this problem and how you go through this feeling - the feeling that your baby doesnt want you any! Thank you