kpc, I'm really sorry to hear about your granddaughter. Sounds rough.
Re side effects from antidepressants: I'm on lexapro and the major side-effects have been sexual. However, for me, it works if you work it, and I've learned to adjust.
After a while on lexapro, I started taking a tricyclic (older style antidepressant), doxapine, as well (to help me sleep) (I was sleeping 2 hours a night for an extended period). That drug, or the combo of the two, seemed to result in a 15 lb weight gain but my weight has been stable since then. The tricyclic also had an excessive sedative effect during the day.
There are a bunch of good new antidepressants out there--a skilled clinician can help you find the right one for you.
Hang in there.
2003 Trek 7500FX/standard saddle
2006 Trek Pilot 2.1/Serfas cutout saddle