Can it be ITBS if it isn't worse when running downhill?

Currently dealing with a dull aching pain on the outside of my right knee when running – not sharp at all and is fine to run on and I can generally run through it. Starts about the same distance into every run, and has been there for about 6 months. It usually hurts more after, when going up and down stairs and after sitting cross legged for a while. It also has a grinding/creaky feeling when I bend and extend it. I know ITBS causes pain on the outside of your knee but other than my pain being in the same general location none of the other normal symptoms of ITBS really align. It is also more on the side and then goes deep into the joint, doesn’t hurt to press on it at all.

Some history – I am 21, female, 168cm, 50kg. Previously was anorexic and have a pretty bad exercise/running addiction have been running my entire life so concerned this has made my joints shot. Currently probably running more than I should be and not taking many days off – I know no one can diagnose me here but its a while before I can get to a doctor due to lockdown in our country. Just wondering if this is just general overuse or the start of osteoarthritis?