I've been ill for a fortnight now. Really sick. Starting to feel a bit better but I've coughed up brown phlegm for days (stopped now) and I feel like I have something jabbing in my back like someone poking me on one side. Really cold hands/feet all the time. Obviously I'm not dying as I'm on MN and I do feel better than I have but I can't decide if I need to go back to the GP and say I'm worried or I'm completely overreacting?