I Had Chemo This Past Year - My Last Treatment

I had chemo this past year - my last treatment being 6 months ago, for Lymphoma. Since then I developed a huge rash cover a good part of my body. It took 2 months to get over that & since then I have developed very bad acid reflux. No matter what I eat, it's always burning. I realize I have too much acid in my body so trying very hard to eat more greens & protein. Is there something else I can be doing? I have also found apple cider vinegar helps but the minute I eat again, the reflux comes back.