Welcome to the Healing Well Wrapped Club! Sorry to hear that you got a stomach bug and you're having trouble with your wrap.
I have a question to ask you...how many times did you vomit during your illness?
Yes, vomiting and retching can damage even a healed wrap, it is also possible to vomit without permanent damage to the area. The repair is much stronger than you might imagine.
There are times when your stomach and wrap become irritated and can mimic reflux. Were you ever using anti-nausea drugs to try to stem the nausea and stop the vomiting/retching episodes? Around here we always recommend that post-Nissen patients carry anti-nausea drugs with them at all times due to the fact that vomiting can be harmful and create painful side-effects.
I know how hard it is to wait for an appointment with a specialist while you're dealing with such uncomfortable symptoms.
In the meantime, be sure to baby your stomach and wrap...back off on solid foods and eat only smooth and bland foods. Stay away from any GERD triggers like acidic and spicy foods, and alcohol. Keep your meals small and frequent. If the head of your bed isn't elevated, get it up 7 or 8 inches (17-20 cm). Your stomach and wrap are obviously very irritated, so treat them gently for a few weeks. Hopefully that will be enough to get you feeling better. Do you have any PPIs or Ranitidine you can take in the meantime? That would probably be helpful as well. Antacids may be comforting as well.
Good luck! Let us know how it goes.
Words of wisdom by Eckhart Tolle:
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”