Hi, can anyone advise please. We have a ewe due to lamb this week. We saw a prolapse, which we thought was a lamb, then got vet out who stitched it, but she said to remove them when she starts to lamb.... How do you know? How often should we check her? This is only our second year with sheep, last year they all lambedon their own, including this one who had twins. Any advise would be very welcome. Thanks