is it normal to feel like this?

They say I found out I was pregnant I was scared, happy, nervous, couldn't believe it. I told my best friend because I was in such shock. A few days later I told my fiancé. He was too very excited nervous and happy. We went through an emotional roller coaster but we are both at a place where we are happy and know we can get through it. However lately day by day I get more scared. I've told my mom and one brother and a couple of Friends. We live with fiancés mom & stepdad. We haven't told them and I think that's another reason I'm scared an anxious. I have so many thoughts going through my head. Like omg can I do this? I'm scared and I don't know how to explain it. Kids now a days are so entitled they want the newest expensive clothes, they think they need to have to newest phone and iPad. I refuse to be one of those moms who don't spend any time with there kids and just hand them an iPad and do whatever. I understand if it's an educational game but to just give it to them for hours while not doing anything is what gets me. I just don't know how I feel anymore. I always wanted kids my whole life and now I'm like can I really do this? I want to keep my DH as number one because I fee like when you put them last they fee last and your relationship suffers and so does everything else. Obviously our child will be number one but you know what I mean? Any advice? I know I'm all over the place but I just needed advice & to vent.