I Have Been Getting A Few Small Hickey Like Marks

I have been getting a few small hickey like marks on my nose and one on my neck, they leave rather quickly. Can you tell me if I should be concerned? I do have a cardiologist I have seen , he said I have aorta thickening but nothing to be concerned with at this point and nothing he thinks will be an issue in my future. I'm easily worried and these spots are bothering me with worry. :) Kellie