What Causes Intermittent Pain In Wrists?

My wrist really has been bothering me lately. It does not hurt all the time but sometimes movements like opening a door or pushing something cause excruciating pain. I ve tried wearing a cock splint for 3 weeks straight, even at bed time & this is still an ongoing problem. Should I seek out professional help & have tests done or is there alternative options. I should mention that I worked as a CNA for many years as well as a Pharmacy Tech & it is my dominate hand thats bothering me.