It is clearer to me with the photos that your swelling is not right at your incision site and that is good!
I do remember it seemed like one of my hips seemed like it "stuck out " more prominently and indeed I had divots where my anterior scars are that have since mostly filled back in.
You had two surgeries in the last 2 years and said you had been walking alot but you don't say you are having alot of pain where the swelling is?
The spot I notice looks like it could indicate an inflamed trochanteric bursa.
Friction can build in the bursa during walking if the long tendon on the side of the thigh is tight. It is unclear what causes this tightening of the tendon. The gluteus maximus attaches to this long tendon. As you walk, the gluteus maximus pulls this tendon over the greater trochanter with each step. When the tendon is tight, it rubs against the bursa. The rubbing causes friction to build in the bursa, leading to irritation and inflammation. Friction can also start if the outer hip muscle (gluteus medius) is weak, if one leg is longer than the other, or walking alot on banked (slanted) surfaces.
I know this has been a long recovery with the two surgeries and being patient must be hard, especially as you are young and active.... but swelling can indeed be present at 6 months and maybe a physical therapist could help at this stage.