question: I am 56, Female, weigh 132 pounds, work out every day. I am experiencing heart palpitations, sour taste in my mouth, belching, chest pains. I have been experiencing symptoms for about 4-5 weeks now. Had an EKG a few weeks ago. Results normal. Had been taking 40mg Nexium for about10 years. Gradually switched to Zantac, but for past 2 days have started taking Nexium again. Have been experiencing stress and anxiety for 2 months, exacerbated by worry about what is wrong with me. Most worrisome symptom is heart palpitations whicChatDoctore and go throughout the day. Had blood work done today but don t have the results yet. Any advice, especially regarding palpitations?