Lugol and Indigestion

I have been taking Lugol for the past month and I am now at 12 drops (vertical)/day.

I have two questions:

I have noticed that I am suffering from incredible indigestion, which I never had before. everything that I eat burn in my stomach until dawn.
Is this something to expect with the Lugol? Or perhaps it is related to the Papaya enzime that I take? The more indigestion, the more I consume papaya enzime, which really doesn't help all that much.

Shall I continue with the 12 drops or increase the daily dosage? I have yet to find any difference in my body since I started taking it, except that my Depression has lifted a bit. Is this normal?

I thank you for your input.
MM