Can it be ITBS if it doesn't hurt going downhill?

• I am a 20 year old runner who has been experiencing lateral knee pain for about 3 months. It is a deep aching pain on the outside of both my knees - feels like its on the bone (although it hurts my right knee more). It does not seem to fit the diagnoses of ITBS as it doesn't worsen when going downhill and there is no swelling. Also, they both have started to make 'grinding/creaky' sounds when I feel them when bending and extending them. They also really hurt after I extend my legs after sitting cross legged for a while. Any thoughts on what it could be would be appreciated - thanks!
  

Maybe as I've seen a physiotherapist once about a similar pain and she said it is very likely to be ITBS but also attributed it to my shin splints - it's like the weakening of the shins putting more stress on the knees, plus overtraining, etc, according to her. So sometimes the cause of the pain is not direct, it's always from a range of other causes. Although since it's near the bone, it could be something else altogether. I am just thinking, could it possibly be some form of tendinitis?