In reply to BrianT:
It can be a long slow job. I did the tendon - bicep attachment whilst tightening scaffold fittings many years ago, and aggraveated it hanging off overhangs and doing pull ups.
Rest, Rest, Rest, Gentle Physio, Rest, and more physio.
Dont start playing monkeys as soon as the pain has eased, because you'll just tweak it again, and be back to square one.
I've still got to look after it, and avoid any sudden wrenching movements, if I want to stay strong.
Take care. It can be blooody frustrating for a climber, when all you want to do is climb!