I "sprained" my ankle 6 weeks ago, i still can't be on it for a long time, still can't fully rotate it without pain. when should i see a specialist?

Now: Go to see an orthopedic surgeon as soon as possible. Ankle sprains usually do not take that long to heal.

Ankle sprain: I would ask if you have had an X-ray yet? If still struggling this long for sure I would seek an evaluation with Primary Care Provider who can determine if an x-ray is needed. OFTEN though.. a sprain can take a while to heal.