Pregnancy hormones?

I'm not very far along. Only about 6 weeks. Most people would be jumping with joy. But I'm not for some reason. My husband and I had been trying for a year and we both finally have everything we've ever wanted but I just don't feel happy like I thought I would. I don't know if it's my pregnancy hormones and emotions that have me feeling like this or what. Have any other moms felt like this? And if so did it go away shortly after? And how did you deal with it?