So I was doing great, flying through the programme and hitting 5k after week 6. Then it happened. My first "bad" run. Week 7 run 1 did not go well at all. Really struggled with fatigue and I even had to stop and walk for a minute or so near the end.
That was Tuesday and I have been really busy with work the last few days and needing a lot of sleep and just not up to running at all. Decided on a rest for a few days. Was a bit concerned about going out this morning, but I felt a lot better and so went for a few laps of the woods next to my house in the mud. Managed 4.5k in 26 minutes so was delighted to be back on track after a few days.
So I would say to anyone, don't worry about a bad run as it will come. And don't worry about taking a few days off if your body needs it. It was the right thing to do for me and I have bounced straight back in where I left off.
Good luck all!