welcome to Healthcare Magic.
There is 3 possibilities for your current suffering:
-Withdrawal effect of effexor
if it is stopped suddenly without slow tapering of doses.
-Recurrence of anxiety
symptoms leading to increase acidity and somatic symptoms of anxiety.
-Side effects of Cymbalta
In my view if suffering is severe, then it is better to fix appointment early, so that appropriate steps can be taken early to relieve current problem.
Wish you all the best.
Dr Ashish Kumar Mittal