According to your saying, it is good to continue the therapy you are on the way, as it seems that is working fine in your case. Hope it will work for much longer!
I would advise to get a scheduled follow-up by a cardiologist in order to determine if you need further surgical treatment
Please bare in mind that the most important thing in your heart problems management is the medication therapy. With regards to surgery, it would play a role in improvement of quality of life.
All the best!