Setbacks are there to slow you down. You have a problem and you now know what it is. Take the enforced rest and as the doc has said it is OK- get back on the bike asap. Much as it may dismay you- get the bike loaded into the car and get some "Flat(ter)" miles in for your first few rides. I know they are boring but come back gently.
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How long was I in the army? Five foot seven.
Spike Milligan