They usually do not require treatment unless they are associated with other symptoms such as chest pain, shortness of breath, dizziness, fainting, etc., or if your doctor notes that they follow a certain pattern that could lead to a more dangerous rhythm. There are medications to reduce PVCs in those cases. It sounds as though your physician has evaluated the situation and is not concerned. That being said, the sensation of an irregular heartbeat can be disconcerting. Some substances may aggravate PVCs, such as caffeine, alcohol and nicotine.
Caffeine is present in soft drinks, tea, chocolate and of course coffee.
You also may notice activities that aggravate your PVCs, such as eating a heavy meal or strenuous exercise. It's important to learn to stay calm when this happens. You may want to take that a little further with meditation and other relaxation techniques. These won't hurt and may help. Sometimes people develop PVCs for a while then they seem to disappear again.