A really good Half Marathon race at Silverstone on the 15^th March followed by disaster!!

On the 15^th March I competed in the Flora London Silverstone Half Marathon and what a great event this was. The organisers did a great job and it was a fantastic race. For me, it was especially good as I put in a strong performance and got a new PB of 1:52:30 (and all this still feeling like I could have gone faster, wonderful!). I finished the race and felt on top of the world; however later in the day my left ankle/foot started to ache and initially I assumed it was just the after effects of my exertion during the race (after all my legs ached a little too!). However come Monday morning I wasn't able to walk without significant pain and it was clear that it was something more serious. Anyway, I decided that the best course of action was to take a few days rest from running to see if it would go of its own accord (hoping of course that it was just a minor strain or something similar). So after 3 days of no running at all I ventured out for a short run last Thursday morning but unfortunately I could only manage 1 mile and a very slow mile at that before my foot was throbbing too much and I had to stop...so I decided to not run at all for the rest of the week and over the weekend to see if I could get back on track this week. In the mean time I have been wearing a support and treating it with both ice treatment and heat treatment trying to speed up recovery. This morning was the next test, so I headed out early this morning with it all strapped up hoping that I would get at least a good 30 minute run under my belt and that the injury wouldn't be a problem.....however after just 4 minutes I was in a lot of pain and in my heart I knew that I was not going to be able to do the full 30 minutes that I had set out to do. I carried on and did 2 miles, but I had to stop at this point because of the pain and I feel that by actually running on it (even though it seemed to be getting better) has now inflamed it again! I am feeling very anxious as I know that this could mean the end of my London Marathon challenge and this is something that I have been working hard towards and of course looking forward to. Also, if I don't run I will feel very bad about letting everyone down that has pledged money for my chosen charity. I feel this morning as if I am in a quandary, not sure if I should give it a few more days or another week or so and see if it is OK; or whether this is really leaving it too close to the marathon deadline, without the required amount of training and then it would be silly to run anyway...or maybe I should just accept what has happened and now try to defer my entry to next year (not sure when the cut off for this is?).....oh what a disaster...I think the best course of action is to speak to the FLM organisers today to see what my options are and take it from there..........I am feeling very disappointed :-(