Perhaps it could have been, your mucuous membranes reacting to the spicyness, rather than having them in your urine itself? Many autoimmune disorders tend to react strongly, to certain eaten things (like spices) - chronic bladder wall inflammation being one of them, for example - so I assume it could be possible, for that sort of reaction, to happen mildly and temporarily, with an excessive exposure like that.
Perhaps it could have been, your mucuous membranes reacting to the spicyness, rather than having them in your urine itself? Many autoimmune disorders tend to react strongly, to certain eaten things (like spices) - chronic bladder wall inflammation being one of them, for example - so I assume it could be possible, for that sort of reaction, to happen mildly and temporarily, with an excessive exposure like that.