Unless symptomatic or is associated with any prior cardiac ailments bradycardia would not be much of a problem.However it should be properly assessed by doing a series of tests including ECG, Echo and Holter monitor evaluation. If the condition poses any serious threat you would be advised EPS and further pacemaker implantation.
I also wouldn't worry about any of this, not even the chest pain and fatigue as you stated that that all started with the diagnosis; your emotions are playing into this so try and stop worrying about it. Chest pain is a direct result of a lack of bloodflow to the heart muscle either being caused by coronary heart disease ( you are way too young to have that, especially as a female) and any of the forms of cardiomyopathy which, if you had that, believe me, you would have known about that a long time ago as your heart walls would have had to reach a point of outstripping the blood supply. Bradycardia really isn't dangerous unless the rates are running in the 30's range. Most people run between 40 and 60 which is the classification for bradycardia.