I have a distal fibular stress fracture. Had two x rays, it didn't show. But it showed up on MRI. Was on crutches for a week, then air cast boot for two weeks and now I'm just using if I'm walking a lot or have agravated it. Will take another four weeks or so to heal. In the meantime am swimming and now able to cycle to keep up fitness and doing strength exercises. I'd still fail a hop on one leg test, and my calf strength in the affected leg is now poor so needs work. Can't single leg heel raise or toe off on that leg, supposedly when you can do that without pain you're ready to have a go at running again. I think mine is caused by over pronating and over training and a weak glutes/hips so have been working on strengthening those and my core in the meantime. I think the return to running is meant to be v slow ie one minute run three min walk building up from that slowly. It's a real pain in the neck. I miss running and have had to ditch my HM plans. I'm in a quandary footwear wise as have shoes that are supposed to stabilize the pronation and as I have flat feet but am not wondering whether I am better off going for a neutral or even minimalist shoe to force my feet to work more. Good luck and hope you recover soon. Rest is the key I think.!