Posted: 02/03/2014 at 10:00
i think I might have a bit of this too - I'm also running london, Been trainng 5 days a week, longest run 18 miles. I saw my physio this week as my knee was feeling slightly creaky but only after running, he said i had tight quads that were probably irritating the knee cap, he massaged them and told me to keep stretching. But as the week has gone on both my knee feel sore but only after running.
what does your knee pan feel like? Do you get it when running?
I would get to a physio for some advise and definite diagnosis, they can give you excercises to do.
try not to worry about putting on weight, you'll probably eat less if you do have to rest, I had to take 2 weeks off running last year due to illness and didn't lose any fitness - worse case scenario you can still cross train or swim to keep your fitness up.,