Should I be concerned?

Age: 28 Sex: Male My Medical History: Eczema.

I hit this finger against a radiator slightly hard and it hurt for like 3 seconds. That was two days ago. (Picture in comments as I couldn't figure out how to upload to imgur)

No medical history for me personally. And no history of skin cancer in family that I am aware of. Worried it's melanoma.

I took two advice the morning that I hit my finger, roughly 12 hours prior due to soreness of working out my legs.