Just started week 3 and it has been going well generally. Not finding the three min runs too tough and I feel a lot fitter... BUT the last few days I have developed quite a bad pain in my left hip. It is a constant ache that grows worse if I for example bend over to pick something up. Votarol has helped but I'm not sure whether I should keep running (which I really want to do!) or if I have to stop for a while. Do I need to see a doctor? Has anyone else expeienced this? Any insights would be great.