Hi gloopster, looks like our wraps were done at the same time. Sorry you're experiencing this at the age of 21.
I'm told my wrap is too tight. There is no way I'm getting it loosened as I can't risk reflux again. If I get too much gas in my stomach or especially if I eat too much I do get what feels like a burp / slight regurgitation, which puts acid into my oesophagus that seems to stay there for ages. I don't know if this helps any but I never eat enough in one go to feel full, and that seems to stop it.
All the best,