Weaning off Antidepressants

I'm weaning myself off antidepressants in hopes of having a drug free third pregnancy.  (I've lost my first 2 and hoping this helps carry to term)
I've been on antidepressants approx 10 years now and have tried to come off them once before but due to the side effect of (extreme) anxiety I caved and went back.  
Hoping since I'm on a different drug now - cipralex - that this time will be a little easier.  
Any suggestions on getting through this?  I know I should exercise but I honestly can't find the energy or drive to get up off the couch.   
Anyone been through this? And how long did your withdrawal symptoms last?  Are you still functioning without the drugs?