Aches and pains

Hello! I am one day shy of my 12th week post surgery to repair a lateral malleolus fracture on left ankle. Once I went from the half cast to boot, I feel like my transition to a shoe with ankle brace went pretty quickly (about 3 weeks). I'm now using one crutch while I work on my gait. Over the past week, I've started noticing a pain (maybe more like a discomfort?)on the outside of my leg and I'm wondering if it's due to maybe overuse of the muscles/ligaments, as am trying to walk a lot more and workout (Onuse the term loosely). I can massage the area and it feels sore like after a workout. Can anyone tell me if they experienced something similar?