Is it wrong to miss what I'll never have?

So I'm sitting here at 5 am impatiently waiting to deliver my youngest daughter (and last baby) and for whatever reason all I have been able to do for the last hour is cry. I'm crying because the my prevailing thought for the last hour is that I'll never know how much Jenny would have looked like her siblings or whether or not Morgan will look like her big sister! Maybe it's the pregnancy hormones, but this feeling of missing Jenny is really overwhelming right now. I can't wait to meet our new little Lady. I can't wait to hold Morgan in my arms and fall in love with her tiny fingers & toes. To hold her close and press those new baby memories into my mind to play back when she's all grown up. And I guess as a result I can't help but to go back to being pregnant with Jenny and remember thinking the very same things. I guess a part of me feels guilty about moving on, about surviving. But laying down and dying just doesn't work especially when you have other children and a partner who needs you. Which brings me back to my initial question (there was a question?) With a new baby on the way, three great kids, a wonderful husband and pretty sweet life is it wrong to miss what I will never have, 3 daughters on earth instead of 2?