I'm All Alone :(

My littlest girl started Kindergarden today. That leaves me in the house during the day with.....well, with me. It's only for a little over 4 weeks, then I will have my hands full with the new baby. It's actually good timing. It will be nice to spend the days with just the baby. I can give him the attention he will need, and the girls won't feel left out. But in the meantime, I'm awefully lonely. I can't believe my little girl is in school now! Why is that so depressing?