My period was a month late When it finally came,

Patient: My period was a month late. When it finally came, it was my normal flow. Well two days later, after my period ended I used the restroom and noticed a small amount of blood in my underwear and when I wiped, I noticed I was spotting. I have been cramping and spotting for the past four days. Is this normal? What Does this mean? Should I be concerned?

Doctor: