My holtor monitor said i had a run of non sustained vtach of 5 beats. was told not to worry but everything i read said this can be lethal? what should i do?

True . It could potentially lethal but you need to have an event monitor to see more of these episodes and correlation with your symptoms . If so you need further work up

A 5 beat run of V Tach is concerning. To get the best evaluation, advice,& follow-up, consult a cardiologist who specializes in electrophysiology. Mention any family history of fainting or any sudden cardiac events