Other risk factors include a family history of early stoke, diabetes smoking.
In adults the aortic valve is usually only replaced surgically or percutanously as is the pulmonic valve. The tricuspid valve is rarely replaced and usually repaired.
Usually the question is about the mitral valve.. and the answer to that, is that a repair is always attempted because if repaired well there will be no need for blood thinners and the results are long lasting. The success rate of being able to repair a valve depends on what was the pathology that lead to the leaking valve? And which part of the valve is damaged and how extensive. A favorable anatomy of the mitral valve repaired in a high volume Centre has a success rate of over 95%.
Other causes of chest pain include muscle and bone pains of the chest, lung involvement like an infection or bronchitis. There are a number of other more rare causes as well. If this chest pain is bothering you, or if it is brought up by activity, I would suggest you talk to your doctor and see if he can arrange for you an exercise stress test or some other test like a MIBI, if appropriate.