Does Vbeam cause bruising?

I had vbeam procedure done which caused pencil eraser sized purple bruising. I was surprised because the veins that were hit seemed to be much smaller than the size of the growing bruise. It looks like the bruises are starting to turn a brighter red than the veins originally were. How is this possible?! I am worried that it is going to take ages for these marks to disappear even though the doctor said about 10 days. Is it 10 days for the purple to fade or the marks altogether? Thanks in advance!