I'm on the ACC/physio books too. The physio said it was a compressed nerve and it's the sort of thing only time can heal. Have been running easy and light as suggested, it's been nowhere near the mileage I was doing 6 weeks ago!! Back to physio next week to reassess. I'm not sure what the next step is.
Last week I ran a measly 3.7km. I went to the pool on Sunday though and had a great session - 60 lengths (1.5km) in about 45 mins.
This week I hope to run 10km over the week (3 runs) and go for another long swim on Sunday.
I'm also working on building my strength in my hips and glutes, as well as overall muscle tone. I aim to do a weights/strength season twice a week from now on.
I miss running, especially long runs, but I'm hoping that a little time to rest now wil l have me running again before long!!