I am feeling much "better" since I began taking Cymbalta with Lyrica, but just as you, I just do not have the energy that I used to. I take Adderall for ADHD, and when that wears off, I just collapse!
It is very hard to remember when you begin to feel "normal" again that you cannot just go back to doing everything you used to. And the funny thing is, people around you expect you to get back to it too! I may be able to get up and cook supper again and clean the house, but I cannot bust out 4 loads of laundry, make supper, vacuum the house, play with my 5-year-old and bake a wicked awesome cake all in the same day anymore, ya know!?
Hell, I don't think I can even go back to work again. I don't know what to do with myself half the time, so I just keep cleaning the house, which is a wicked mess cuz I haven't cleaned it in like a year since I got really sick and haven't gotten out of bed...
I wish you luck. Remember, your healing has begun. Pace yourself. Do what you can. Try setting 3 goals a day & smile when you finish them.