It's so hard to leave them behind, knowing that someone else is caring for your precious little bundle.

Have you got someone in your family you can keep updated and then let everyone call them? I used to ignore the phone too, the last thing you need at the end if an emotional day is to go through it all over and over again.
Your milk will still be coming in, it takes a while when they are so early, you are doing a great job every little bit helps.