I've had a hip problem since before C25K and been under the Gp for it which was all a bit of a farce (they X-Rayed the wrong hip and told me I was fine, which took them 6 months to realise). I managed to get a physio referral through work to my physio that did a great job helping me with the T10 fracture and my L4/5 prolapse over the last few years so she knows which bits of me work and which don't
I turns out I've got quite nasty little muscle strain deep in the old glute which needs professional help. I had some acupuncture today which has helped and some initial manipulation...
The good news is that I'm okay to run
The bad news is no increasing my distance until it's fixed and no speed work, looks like just a gentle 5k-7k holding pattern for me for a while, going to save the next 10k until the muscles in the old derrière are behaving.