I wouldn't be surprised if this particular cloudy dream-like situation is a side effect of my antidepressant.
Even so, these sorts of days are a small price to pay for the *extremely large* benefit of not being impossibly depressed every hour of every day. If you're feeling that way, see a doctor now. Just do it. It's well worth it. There's no shame in it. If you need glasses, you'd get them without hesitation. If you need meds for depression, you should get them without hesitation.