Thanks everyone for your congrats and encouragement. 
olrojo, the NHS Podcast is free to download. I started using that. The coach is called Laura and she tells you when to run and when to walk, so all you need is a decent pair of runners and an mp3 player. At week 3 I started making my own playlists using songs that were the right length so I could listen to my own music but still knew when to run and when to walk (my phone is prehistoric so I can?t download any of the couch to 5k apps that tell you when to run and when to walk while letting you listen to your own music, but if you have a smartphone of some kind you can probably get an app for it). Do jump in and have a go. I honestly couldn?t run 200 metres when I started this and now (on my good days) I can run for 5k.
Well done for starting toriap2! JH1967, fromheretomaternity, dementedma, UmBongo and BIWI well done on your runs and of course to all you fellow graduates whose ranks I have just joined.
These threads are keeping me going.
Just back from my first postgraduate run! I only managed to get out and run once last week and I think it?s because I?m pushing myself to do better and better each time and losing the fun of it. So today I left my watch at home and put my iPod on shuffle so that I couldn?t be tempted to time my run and just tried to make it to that tree I noted last Wednesday.
There were points when I thought I was going to give up early, but remembered posts on here about how fitness levels are often higher than the mind thinks they are so pushed through it. I started off by focussing on some of the reasons I was out there in the first place: good for physical and mental health and because I?m really enjoying the changing shape of my body that the running is helping with. Like others I haven?t found the running has done much to help with weight loss, but I?m doing something else for that anyway, but I have noticed that my legs and bum are a much better shape since I started the running. I think I?ve gone from a vaguely female blob to what I like to think of as a bronze statue wearing a very thickly padded catsuit.
Okay, so I?m not quite that ripped underneath the flubber but it?s definitely shaping up. I keep poking myself in the gut because that used to be squishy all the way, but now the squishy layer is sitting on top of some muscle.
So I kept distracting myself from thinking about the discomfort of the running and soon enough I was at that tree I was aiming for! 
Next goals: 1) try and run all the way to that tree again and 2) try to enjoy the running again after this recent blip.