illicitly - in a manner disapproved or not allowed by custom; He acted illegitimately when he increased the rent fourfold. illegitimately. lawfully, legitimately, licitly - in a manner acceptable to common custom; you cannot do this legitimately!.
You should check your blood pressure at home at least once a day, three to five times a week. Two to three measurements a day would be ideal, but at least one, at different times of the day, is okay. The morning blood pressure may be different than the afternoon blood pressure, which may be different than the evening blood pressure.
How often you should have your blood pressure checked depends on a couple of factors. If you ordinarily don't have any other medical issues, then your blood pressure ideally should be checked at least once a year or every time that you see your primary care doctor.