In this article, you will learn about what spotting looks like and how to tell the difference between period bleeding and spotting. You will also find out when spotting is considered normal and when you should speak to your doctor about abnormal vaginal bleeding. What is Spotting? Spotting is referred to by doctors as abnormal vaginal bleeding. According to staff from the Mayo Clinic, spotting is when you notice small amounts of blood when you are not expecting your period. The spots of blood are often seen after wiping when you have used the bathroom or you may notice them on your underwear. 1