Temporary is Too Long

My sweet baby boy is finally sleeping. I guess it's partly my fault, since we weren't home during his nap time this afternoon...of course now, he'll be up all night! Oh the joys :o) I don't mind - with the day of my return to work looming on the horizon (one week!!), I treasure every single second EVEN MORE. Somehow I have managed to block going back to work out of my mind all these past weeks, but now it sneaks into my mind, bringing on quick tears and a knife-like pain in my heart. Babe tries to be encouraging by saying, "it's only temporary" and "you'll get through this". I don't know how to tell him that he's missing the point...Of course it's only temporary - but even temporary is TOO long. And of course I'll get through this - short of hiding in my room and rocking, I have no choice but to "get through". But I don't want to!!! What if I miss something? He is rolling over all the time now and just discovered his feet! What if he does something cute and I don't see it? He's just started really laughing and it is the most beautiful sound on Earth. What if he's hurt/scared/sad/hungry/sleepy and I'm not there to comfort him? Will he wonder why I'm not there? Will his little heart hurt because Mama isn't there to make it all better? And yes, I know what you are thinking. He's going to be in excellent hands both with Babe and with his sitter. But they aren't ME. And here's another scary thought - what if he's just fine??? What if he doesn't miss me/need me? I rationally understand that most mamas feel fears similar to these when faced with going back to work and survive, but I'm not feeling so rational right this minute. Oh, I need another tissue....