The first break was after I phoned the doctor and she told me to see her the following day and meanwhile to rest all day with my feet up. This had two effects - firstly I learned how annoying it is to rest all day with your feet up and secondly I put off going running till I had the all clear from my blood tests, which happened on the Thursday.
The break continued because of late nights and consequent lie-ins! The early morning runner needs to get to bed on time.
Anyway, I got back out there this morning and, apart from sluggishness, it felt good!