Unfortunately all antidepressants have a spectrum of side-effects ,
many, such as the ones you describe, are common and represent an extension
of the desired effect. The incidence and severity vary a lot from patient to
patient. However, they are dose-related so the unwanted effects will decrease in incidence and severity with decrease in dose. You may consult with your psychiatrist to pick the one most effective in relieving your pain and try decreasing the dosage until you feel it's time to go back up a bit - you'll be coming to a balance between wanted and unwanted effects. And, please comply 100 per cent with your prescriptions otherwise no-one will be able to judge effectiveness.
Yes it is worth it ... give it your best shot!
Best wishes.