High wbc, petechiae, bruising, fevers, joint pain - what do i have?

Many possibilities: Fever, redness, inflammation, swelling, and joint pain can be signs of a possible infection. Have it evaluated by a professional and get the appropriate treatment.

See below...: You should immediately consult your physician. The information you provided may indicate various clinical conditions including infectious/inflammatory states but also more serious conditions like leukemia. Therefore, seeing your physician as soon as possible for a clinical exam is strongly recommended.

See a doctor: With all those symptoms together, you should go see a doctor.