9 mths ago had carpal tunnel surgery, normal recovery, woke up this morning and thumb severe pain can't do anything, when bent, pnky/mddle flex too?

Likely unrelated: Likely unrelated to the carpal tunnel. The more common issue with bending of fingers that can come on out of the blue is flexor tendonitis, more commonly known as trigger finger. Often this is self limiting, but occasionally OTC medications such as Advil (ibuprofen) and Alleve may help, assuming it's ok for you to take those (check with your doctor). If not, get it checked out, usually easy to treat.

Thumb pain: has many causes, tendonitis, arthritis, injury, strain, ligament laxity. A common condition is stenosing tenosynovitis of the flexor tendon or trigger finger. full bending, flexion of the thumb can cause the index tip to bend , sometimes known as a linberg comstock syndrome ( this is anatomy not an issue) and some will involuntarily flex other fingers . if there, pain, swelling seek medical rx