Joy,
Good for you, keeping the doc talking 'til there were more ideas about riding. I agree, getting a real fitting will probably help. Also, if you go clipless you can gear down and spin to give your knees a break. The idea is to reduce the pressure of each pedal stroke.
Go ahead and start taking glucosamine. But buy the glucosamine/chondroitin (sp?) supplements. The combination works much better than glucosamine alone. And give them time, it won't happen overnight, but your joints will start to feel better. Yes, that's what I take - the dog, too.
And don't give up on the water aerobics. Think of it as easy-on-the-joints cross-training.
MomOnBike (who really should get back in the pool and shape up the non-biking parts)
Give big space to the festive dog that make sport in the roadway. Avoid entanglement with your wheel spoke.
(Sign in Japan)
1978 Raleigh Gran Prix
2003 EZ Sport AX