I'm 17 and have been running relatively low mileage for about two years now. Roughly this time last year my knee swelled up randomly and it then it went back down after about 3 weeks of rest. However, after a 10k race a few weeks later it swelled up again and has never gone fully down since (I took about 3 weeks off running afterwards and then saw a physio who said I could carry on running). The swelling doesn't cause any pain but is just irritating as I can feel it there all the time and so I was wondering if anyone had experienced this before and had any suggestions as to what to do. I've run for the past year without any serious problems but would quite like to get rid of the swelling. It is just below the knee and feels soft. I don't do much stretching or core strength, so this could be the issue. Also, could it just be a matter of growing at my age? Any advice would be much appreciated.
Thanks.