Yes I agree totally with getting it checked out by a Doc. see if you can get a referral to a sports medicine doctor. They want to get you back out into your sport not hold you back.
Until then ice it whenever it gives you a problem.
I too have a "bad" ankle due to series of uncared for sprains. (It is noticably larger from inflamation and scar tissue) It is now arthritic (confirmed by x-ray) to the range of motion that it doesn't hurt me is limited but I found that the more I babied it the less I could do. There was a huge difference on each side in the weight I could use doing
calf raises when I first went back to the gym. Starting with low weight and building back up has really helped. You sort of get used to the "snapping" reminder or your limitations at the joint after a while.