How overdue can a ewe reasonably go? Is there a point at which you should start to be concerned? Today is day 154 since we got our girls. They haven't been near a ram in that time. Still no lambs. I've been back and forth about whether or not I thought they were bred, but I'm pretty sure now that they both are in lamb. How much longer (worst case scenario) can this take and at what point should we worry that something has gone wrong? Thanks for all the help. This forum has been a godsend. I know I'm a worried first-time ninny, but I appreciate the kindness with which my questions have been answered.