I've been on MANY antidepressants, including Lexapro. Lexapro is supposed to be a cleaned up version of Celexa, i.e., not as many side effects. I've been on both and really couldn't tell a speck of difference between the two. They both have a low side effect profile, and both work pretty well for anxiety and panic disorder. Any SSRI can initially cause some mild stomach upset, mild nervousness/sleeplessness, etc. at the beginning of treatment. The important thing to remember is that it does pass. I've been on a number of older antidepressants, like tricyclics and MAOIs, and I can tell you that the newer meds. like Lexapro feel like they have no side effects whatsoever compared to the older ones. Most SSRIs take 3 to 4 weeks to become fully effective, so don't give up on it too soon, especially if the initial side effects are bothersome. Once you get over any side effects (if you haave any at all) and give it the full 4 weeks to work, I think you will be pleasantly surprised at how well it works for your problems.
These medications (for me anyway) have no negative effects on thinking or cognitive function, so I wouldn't worry about being able to take care of your kids.
Just remember to report anything unusual to your doctor, he/she can decide if it's normal, abnormal, or otherwise.