Thank you for your question and concern as according to your disease that you came with that is Varicella zoster virus is just like a viral infection that in result cause a painful rash and it is the virus that cause chickenpox.After getting chicken pox the infection lies dormant in a nerve tissue.these infection in stress can cause shingles.And it is really unfortunate that in the medical term there is no treatment for Varicella zoster infection.The virus that is present in you will only help you t speed up the healing and it can help you in reducing the risk of complications. Shingles are very painful but ir is not life threatening but according to me I don’t think that your symptoms are due to Varicella zoster infection. So I would suggest you to get your full blood workup and ultrasound even your blood sugar ,thyroid levels ,heamoglobin and upper gi endoscopy to get to know about youe symptoms So get your self consult to your doctor and get yourself test.i hope I had cleared your question.Take Care