I did the same exact thing. It last for about 3 weeks, and gets better as you stablize. I was on the same starter pack and increased to 100mg. Now he has increased me to 150mg to the eventual 200 mg.
Trust me - I thought I was going to toss my cookies CONSTANTLY for those first 3-4 weeks. It does get better. I was so excited that I was going to lose a TON of weight,but after losing about 8 lbs during those weeks, I ate like a pig after I could actually eat.
What hurt me, too, was coming down from the Cymbalta - had bad withdrawals.
What helped me was to keep some food in there - soup, oatmeal, crackers, toast, and stay hydrated. Also, I didn't take the meds until night time and made sure I drank a glass of milk and ate SOMETHING with it.
It's rough, but it gets better, I promise. When you go back for your meds check, make sure you tell your pdoc - he has me splitting my 150 into 100 and 50 at 2 different times now to avoid some of it.
Hang in there and let me know how it goes!
Racheal