Hi Will. I've always had an irregular heart rhythm and was taking Propranolol. In November I started having more and more palpitations. I wound up at the ER with my heart bouncing all over the place. They called my cardiologist and he changed my medication to metoprolol and sent me home. The following Monday for the entire week I had every cardiac test they could do. Bottom line was my heart was in great shape I just have PVC's and they may go away or stay. Great :(. My primary doctor asked how things are going and I had to tell him things weren't easy. My husband was going to Germany for 3 months after traveling 2 weeks every month for the last year and a half, I retired from nursing and my daughter got married. He increased my Zoloft, reassured me that these things were normal and said one day they may just stop. I noticed when I get a little more stressed my palpitations increase, but with the increase in Zoloft my palpitations have decreased immensely.