This is not something where you should be looking for advice from an internet forum. The term "bradycardia" means nothing more than a heart rate below the accepted "normal" range of 60-100 bpm. Many people through genetics and/or training have resting heart rates that are not "normal". One of my early mentors in the ER told me "Slow is good until it causes problems". You mention that you have minor symptoms of bradycardia. Only a qualified physician can tell you if those symptoms are anything to worry about or if your training is likely to make those symptoms worse.