What else could this be?

[Not a call to the absurdity of it, but an actual question. If there are other theories she'd love to hear them; she doesn't relish where her head is going.]

I've done this before, and it felt like that. The water, this... [a hand raises, waving to indicate her head, sweeping down to indicate the rest of her] Bogged down feeling, like I'm stuffed with cotton.

What's the last thing you remember, before here?