Last night I had a feeling that I recognised: a kind of heavy dragging feeling in my gut, and I realised what it was - it's the feeling of adjusting to a new routine. I get it when I start a new job or move house or learn a new skill. It's quite an unpleasant sensation, as well as the dragging, there's a sort of gloom (mild in this case because it's a small change).
It will wear off after a few days, and then I'll have got used to the glasses.
This kind of adjustment period (for anything, not just for glasses), with physical or emotional symptoms, familiar to anyone else?