Is Small Dark Line Under Thumb Nail Causing Pain And Swelling In The Thumb?

i have a small dark line under my thumb nail. Looks like a small hair or splinter. From my thumb knuckle to my nail it looks swollen. Well not swollen really. It looks like i have an extra bone running from the middle knuckle up to the nail. These both just appeared. Just woke up with them. I do often have pain in the area of thumb that is swollen. It in both thumbs and is a tingling burning sensation. This normally happens when I'm cold. Are these related. Thank you