Unfortunately, shingles is one of those things that lies dormant is your nervous system for years and can then occur at times of stress, so I would say that having your appendix removed could have bought this on.
Anyway, yes, it can be very painful and make you feel very low and very unwell and you may well have a fever with it. Vomiting is not usual, but if the pain is very bad, this can sometimes upset your stomach a bit and make you feel nauseous and vomit.
Sorry that you are feeling so awful, but hang in there and it will pass and you will feel better.
You wife is right about covering it up. It is best left to the open air really if you can.
Also, I am into alternative medicine and the homeopathic remedy RHUS TOX is indicated for shingles and this may help you to feel better more quickly in conjunction with the other med you are taking for this. It has no side effects and will not interfere with anything but could help you to feel a lot better generally. You can get this from any healthfood store in a 6 or 30x potency and take three a day for two to three days, letting the tablets dissolve under your tongue.
I gave Rhus Tox to a friend of mine you had shingles. She had already been to the doctor who had given her Acyclovir tablets, but she took the Rhus Tox anyway and she got better in half the time and was feeling a lot better within 3 days rather than the normal.
Give it a try and hope you feel better soon.
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Bad case of shingles at 29 
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