What to do if i have pain in arm a week after blood drawn?

Phlebitis: It is probably a phlebitis, which is an inflammation of the vein sometimes associated with a superficial clot as well. Treatment is usually warm compresses and NSAIDs. If it does not get better, be seen as they can sometimes get infected and need an antibiotic.

See below: Please contact the place where you had your blood drawn and explain the situation to them. It is not feasible to know if the blood draw is causing the pain, without examining you.