I would vote for pregnant too by the looks of the last pics.
I use DE in my feed as control of internal parasites/worms. They both look pretty healthy so I think it might be doing the trick. Being careful of handling it with the dust, you can also use it on their skin, backs, if they should get any lice or anything. Just like using it on chickens for lice or mites. Don't use it close to farrowing.
Don't know that breed well, but judging by what I'd seen over the years with the standard hogs... I would venture a guess of less than a month to farrowing.
I love it! I didn't grow up on a farm and "learn by doing" so the wisdom and insight from everyone's experience on here is valued and appreciated more than you know! I hope I can pay it forward to others on here one day as I keep learning!