Not understanding my feelings

I am a new, first time mom and I am having some difficulties. Now, before I go on, I want to state that I am writing this post in hopes of some good advice and understanding and encouragement..not to be ridiculed or judged. 
I am having a hard time understanding why I feel the way I do. I love kids and babies but why am I not excited feeling about my own pregnancy and my own baby? I feel...indifferent. I'm not excited but I'm not upset. I don't feel a connection to my baby and I haven't felt the "love at first sight " or any kind of bonding connection. Shouldn't I be thrilled? Shouldn't I be so happy I blurt it to the world?! I don't get it. Does has or is Anyone else feeling or felt the same way? Or am I abnormal? It worries me and I could really use some reassurance, kind words, anything...help! 😖😑😥