I know what you mean. Didn't you hate people telling you what a huge change it was going to be? Well, duh!

That is a lot of changes in a short amount of time. DH and I have been married for 5 years. We planned on waiting 5 years to start trying but I'm so happy we bumped up our plans. I can't imagine life without either of my boys now.
I never pictured having 2 under 2, but it's getting easier with DS2 falling into our routine. I think that has always helped me handle things better, a good solid routine. My Dsis used to fun me about my schedule because I always had one for DS. Eating times, naps, bedtimes, etc. And she understood how well it worked when she watched him while I was in the hospital. I was so thankful someone understood finally.
There will be lots of joy! Don't worry, you're not missing anything. I felt the same way for a while about what being a mom was supposed to be like. Once Lucas smiles a real smile on purpose at you, your heart will just about burst with happiness.