Congrats on getting some sleep De. A lack of enough blood getting to all the extremities with plenty of oxygen will make body parts ache. You already know this.
For a valve, did ya try the local autoparts store? Or maybe the hardware store. They have lots of valves to pick from.... lol!!
SO, has the surgeon/cardiologist decided and shared with you about the actual valve replacement as to perhaps SIZE and shape?
Will it be norml size to be more like the valve ya got that is good?
Inquiring minds want to know..... Thanks De. Am really glad you got some meaningful rest... That's kinda important...