Brushing my teeth I noticed that the area under my tounge, where it connects to the bottom of my mouth around the salivary gland, is a bloody/ bruised coloring. I patted it with paper because one area does look bloody but its only beneath the skin. I have no pain or discomfort but the color is worrying me. The gland area appears bloody underneath the skin and from there to my bottom row front teeth appears bruised. any ideas what might suddenly cause this?