Thanks to all of you who supported me through W3R1. I DID IT!
Surprisingly I found the first 3 minute jog better than the previous 90 seconds, I seemed to be able to get my breathing under control a little better and kepT thinking about Laura's comment about "bobbing over the hedge" and this kept my speed under control. However, by the last 3 minute jog my calves felt as tight as a drum but keep going I did and was very pleased for it. By the time I had made my 8 minute walk back to the car the calves had eased. As to W3R2 . . . bring it on!