My heart often 'flutters' or skips a beat which can take my breath away. plus i get dizzy spells. ecg normal. heart conditions in family

Holter monitor?: Various rhythm abnormalities can give these symptoms, but most common is premature beats (apcs or pvcs, depending where in heart the beats arise). They usually are benign, requiring no treatment unless frequent/intolerable symptoms. Ecg only detects this if it happens at exactly the time the tracing is taken. Monitors can be worn for longer periods to make a diagnosis. Unlikely to be familial.