Heather Fell, Olympic modern pentathlete silver medalist, writes about her life 'on and off' the track.

I am not ready to leave this bubble — what an incredible couple of weeks this has been. When I realised that I would not be competing in the Olympics I thought it was the end of the world and never imagined for one moment that as a spectator I might be able to enjoy this international celebration of sport. How wrong I was.

I have been asked several times for my most memorable moment or the one highlight but there is no way I can limit these to even a handful and couldn't start to mention them here. It is also crazy how long ago the start of the games seems; so much has happened, so many medals won, so many nights out that I am struggling to remember the beginning of the London Olympics!

My memory loss and recent loss of voice has been exacerbated by the serious amount of shouting, partying and lack of sleep. This weekend contributed significantly.

I had the honour of doing radio commentating for both days of the modern pentathlon and Tom Daley's diving final — needless to say a lot of shouting was compulsory. I couldn't contain my excitement watching medal after medal being won for Great Britain and as a result I've been living off adrenalin for the last week enabling me to burn the candle at both ends. It is a once in a lifetime opportunity even if not as an athlete and I grabbed it with both hands.

After Beijing the post Games 'hangover' was a hot topic in the media, luckily I never felt it then. However after London I think I'm going to have a physical and mental hangover of my own, but first up I'm heading home to my own bed before I can even begin to work out what comes next!