I am 56 years old and had vaginal bleeding two years ago and stopped. Now I had vaginal scanty bleeding for 3 days. Is that abnormal?

It can happen. The normal definition for menopause is two years without a period below, although after age 50, it is often one year. But if you had reasonably regular periods up to 54, then it's possible your system is having a last kick or two before it goes into retirement.

Is the blood like menstral bleeding?