Feeling terrible

So I just found out last weekend that I'm pregnant with my first child. And I feel really bad because I don't feel very excited yet like a lot of women. A lot of women say they already love their baby more than anything, and I just feel kind of blah. Maybe because I'm still in shock? maybe once I go to the doctor and see it's little heart beat it will become more real? Or when I start shopping for the baby? I just feel like this all isn't even real and I'm also thinking about how I'm going to finish school, get married, set up this nursery in our tiny apartment, tell my family who is going to be concerned that I won't finish school, etc. I just want to feel excited and happy but I feel kind of depressed and I have no motivation to do anything :( I hope it's normal and I will snap out of it