Is it necessary for me to see a doctor because of a swollen ankle?

Anonymous
I am a 19 year old girl and my left ankle has been swelling up for no reason and it is not painful. I am very healthy and at a healthy weight and there should be no reason why my ankle should be swelling up. I used to be a gymnast and I sprained my left ankle a lot so can the swelling be a year after the injury or should I just not go to the doctor and leave it alone?
Is it necessary for me to see a doctor because of a swollen ankle?
13 Opinion