What is causing my wrist pain?

For about the past week my wrist has been hurting to bend forward or backward. At first it was just forward but now it's backward too. Putting pressure on it makes it hurt even more. It's not intense pain but it feels like it really needs to crack but I've cracked it many times (even tho it's painful to roll around too) and the pain doesn't go away. Do you think it could be injured? I'm wearing a supportive splint right now (one of those black ones with the velcrow) to keep me from moving it in those painful directions. Should I continue to wear it and will that make it stop hurting? I haven't taken any falls on it recently. Would it be dumb of me to go to the doctor for this since it's not incredibly bad pain?