It's official

So we've found someone to be a nanny for when I go back to work. After a pretty short interviewing process we met Anna who, starting January 8, will be spending her days in Domi's world. This picture pretty much sums up how I feel about this.
On the one hand, for a variety of reasons, I feel like going back to work is an important and necessary thing I have to do. On the other hand, it totally sucks. I've had long conversations with people about this subject, and I know I've posted on this issue before, but it's really been on my mind lately. I find myself getting really sad and wondering if he'll notice that I'm not around. I mean he's still just a tiny baby, does it really matter who feeds him, plays with him, carries him around during the day? (Yes) Then there are other worries I have like, what if he gets really attached to this woman and then she leaves? Or what if he likes her more than me? I've always been the jealous type, but seriously, I will go INSANE.
One good thing is I'm sure I'll appreciate every minute I have to spend with Domi. I'll also be much more reluctant to hand Domi over to Chris when he gets home from work or on the weekend. But I'm sure I'll be exhausted from working, so will I really have enough energy during the time I do spend with him to be a good parent? And dear Lord, what if the sleeping doesn't get better! I'll jump out the window (luckily my office is on the ground floor, so I won't be hurt, but still ).
The good news is nothing is set in stone. If after a few months I realize it's not working out, or I'm miserable, we can reevaluate and go from there.
I know I shouldn't obsess too much, and enjoy my last three weeks at home with him, but what can I say, that's just what I do.