While reading I began to suspect the female cycle, then checking your profile I see you are a male, so that is out.
Perhaps there is a Beta Blocker or a Calcium Channel Blocker that will help that has tolerable side effects. I do not know the brand "Bystolic", I take generic Metoprolol myself, very inexpensive too. I take 25 mg twice a day, normal release medication. The side effects that were the most troubling to me, dizziness, passed after taking the medication for a few weeks.