Hi doc, im 34 years old female. Ive been taking metoprolol in 2013 for 2weeks as doctors adviced cuz my blood pressure was up in 160/100 that time cause of drinking alcohol and lack of sleep every night. Then i stop taking for 2weeks. Then everytime i feel nervous and my heartbeats fast im taking this medicine. At the moment ive been using it for almost a month now. And i wanna stop taking this medicine. Im experiencing weakness and light headed. How long should i stop taking this medicine?