Pain meds are a game changer.
As always, the advice above is rock solid.
Get through today. If that takes a PEG, get a PEG. If that takes anti-depressants that you are dead set against (that was me) you take them. And you get through today. Tomorrow you can work out if you still need them or not.
..but today isn't tomorrow. Today is today, let's get through it!