Hi and welcome
Chestnut, Hermione, Patch and Peanut are definitely girls. I would like to have a better look at the knob of Nellie since picture quality is not great and hair is in the way but am I right that is is more triangular not button round?
The natural variation in the genitalia is much larger than textbook images imply - the same as in humans. It is one reason why we offer a second opinion service on here. The last thing we want is more mis-sexed piggies causing more pregnancies down the line.
My Heulwen and Hedydd were the surviving pups from the two previous litters (hedydd was still suckling) whose mum gave birth to a litter of 6 girls in rescue. Larger, same sex litters do happen. At least in your case, they can all stay on with their mother and her female companions.
How did you end up with a pregnant sow?
