Bucky spends two days lying in the semi-darkness, feeling like his chest is in a vice and his skull is on fire. He can barely breathe and his head is pounding a steady, aching tattoo, exacerbated by the rough wooden planking under his head . The others speak in low voices around him, occasionally coming over to check on him or try to get a little of the water they've been allowed into him.
Bucky coughs most of it up, but it keeps him alive.