I am in the same position as you I think !!, this will be my third lambing....I am still rubbish at telling when birthing is immanent
Do you have a photo ? by description I 'd have said a day or two, but I thought that about mine a week ago and still nothing !!
Hope this has worked should be a pic of my shetland !! This will be her second lambing, she has looked like this for a week and is dipped in front of her hips.....think she's enjoying the B&B of the shed