Coronary heart disease (CHD), also known as coronary artery disease is a narrowing of the blood vessels (coronary arteries) that supply oxygen and blood to the heart.
Therefore, the only way to know if you have gone through menopause is if you have not had your period for one year. (And it's not menopause if your periods stop for some other reason, like being sick.) The average age of menopause is 51, but for some women it happens as early as 40 or as late as 55.
For some women, estrogen can stop suddenly as if the ovaries were removed, or if they have premature ovarian failure (POF), with early menopause, or menopause that occurs at a normal age (usually between the age of 47 and 55).