I have had pain around my belly button area for the last week then it started pussing and smells very terrible and the pain is still there?

Possible infection: Sounds as though there may be an infection present. Please see a doctor for evaluation

Abscess: An abscess is a collection of pus like material , usually within a fibrous capsule. It is usually seen under the skin. It can grow in size and "come to head". It can drain foul smelling fluid and can cause pain. Treatment usually involves incision and drainage and often antibiotics. Patients with suspect abscess should see a medical provider at the earliest.