Sprained wrist 7mo ago. still having pain in wrist and now pain in the base of my thumb nightly. what should i do? surgeon said it just hasn't!t heal

Go back: for follow up , especially if you have pain in the snuff box Some times carpal bone(s) fracture will not show in the regular X-rays , may need to repeat again. .

Physical therapy: Non healed sprain can cause persistent pain and loss of function. Simple exercises like a stress ball or even use a hand grip device (sold at most sports stores). If do something that aggravates it, put an ice pack immediately x 20 mins or wear a brace. Also take an OTC anti-inflammatory med like ibuprofen or naproxen. If not better physical therapy or an steroid injection may help