An injury like that takes a long long time to heal, and it will probably always ache from time to time now, especially when it gets cold. I encourage you to stay off of it as much as you can for a few weeks longer. Flex it, stretch it gently so long as it's not painful to do so, and don't run or play on it until it heals some more. If it is especially swollen or feels hot to the touch, yeah, go see a doc. Otherwise, just be kind to it while it heals.
If it hurtsa lot to flex the ankle, especially if the pain is sharp or extreme, go to the doctor! If you have good medical insurance anyway, why not have it checked out? If you can't really afford to run off to the doctor for every little thing (which I totally understand), then I think (so long as the pain isn't extreme and there isn't a lot of swelling or heat like I mentioned) that it's safe to just self-treat it with rest, elevate it when you can to reduce swelling, and avoid running and playing basketball for awhile longer. Walking should be okay IF it doesn't hurt to walk. If it hurts, STOP. Let pain be your guide with the ankle right now.
17 years experience as a massage therapist.