Hi I've not managed to follow my couch to 5k plan for two weeks due to having a cold and chesty cough. Prior to that I'd been really pleased to achieve 5 weeks worth of training. Trying to go back to where I left off today I failed dismally, ended up with severe stitch and a poorly leg and had to walk the majority of the route. How many weeks should I rewind my plan by (I.e should I go back to week 3 of training). What do I do to overcome the stitch? Don't want to give up and very determined to do this but help please.