Re your cholesterol medication if taken. Beware of STATINS some patients experience some type of dementia, short term memory loss or at least muscle and joint pain when taking these. If prescribed, ask your cardiologist if Niacin might be an alternative.
DH had a aortic replacement valve several years ago *mechanical* and feels great. However, he did not have the same unusual circumstance as you. Good luck with your doctor and your continued relative good health.
Niacin works but you may get hot flushes and skin rash
Try Chinese Red Yeast
What worked for me was Cholestoff...made from pine bark
Last 2 years I stopped all cholesterol meds and went with a heavy weight routine...cholesterol and glucose levels down...bone density up...leg press 325 lb..age 74
Exercise is here: https://www.youtube.com/watch?v=K05Db4WGxXg