Suggest Remedy For Insomnia, Palpitations And Chest Pain When On Diovan

Good day! My name is Perle, 55 y. o. and has a diagnosis of hypertension since 2004. I am currently taking Diovan 160 mg and baby aspirin as well as fish oil supplement to manage my medical condition. My BP is stabilized but I am experiencing several side effects that include: insomnia, palpitations and some chest pains to a lesser degree. My EKG report came out normal but my racing heartbeat won t go away. Aside from being costly, is there any reason that I need to start on other medication of the same group like losartan? Thank you for your advice in advance.