This is thursday. I'd ice it, rest it. By saturday if the swellings down, and you feel ok, I'd go for an easy low gear spin. If it hurts stop, If it doesn't spin for an hour.
Then see how you feel Sunday, and play it be ear.
If its still swollen by Monday, I'd see a doctor.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.