If you're not already taking zinc, you should add about 25 mg zinc picolinate. It should help your acne. In a small discrete area of the Acne you could try topical application of Iodine mixed with DMSO, half iodine, half DMSO. The mixture will feel warm in the bottle at first. If this helps dry up the Acne faster -- it will if these are bromine eruptions -- you could use it everywhere. But try the small patch first to be sure you want to do that.
Your symptoms are expected when somebody really needs Iodine and starts getting it -- mucus, headache, increased tension in organs which are soaking up iodine. The difficulty swallowing is likely your thyroid swollen a bit to soak up iodine.
When you feel you can handle it, raise Iodine to provide more to your body's pathways to move this process along.