Haven't made a bond with baby?!

Ashley
I'm due July 22nd with my 2nd child. A little girl Zoe Elise. My little boy is 5 and he is my entire world I couldn't imagine loving anyone more than I love him. As my due date approaches I worry because I haven't made a connection or bond with my unborn child. Can someone please reassure me that it's normal because I feel like by now I should feel some kind of emotional connection. I'am excited to meet her, it's hard to explain how I feel.