I WOULD stick it out! You came this far. It totally s*cks I know but it will eventually stop. You've been off completely since Monday, I would almost bet by this weekend most of those problems you are having should have resolved.
Interesting you should mention the achey thing too because cymbalta is used for Fibromyalgia which is a widespread pain condition. Perhaps it acts in the opposite effect when being discontinued. I might not have realized this aspect since I have a chronic pain condition and most likely would have attributed this side effect to a flare of condition.
It's hard to decipher my other condition and coming off off of Cymbalta issues but the vision thing was a big problem and I definitely attribute it to discontinuing the Cymbalata since one day I woke up and it was better. I get what you mean but also can't really articulate it. Not sure if you can understand what the heck I wrote

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So keep doing what you are doing. It's hard but it would be worse to go back because it will only prolong the inevitable! (((HUGS))) it WILL get better.
-tattoos