I had similar experience. I am a working mother. My daughter spent most of the time with the maid. When she was 4 months old, she preferred the maid to me. Every time when she cried, she had to be carried by the maid. If I carried her, she would cry even louder. I was very unhappy at that moment. But soon when she grew older, she was ok. So don't be so sad. It takes time for your baby to know you.