I think you said you were going to talk to the vet again? Find out what the blobby mostly clear lumps are and where they came from (stones pic). And what part of the reproductive tract it is. I am (sadly) not real familiar with the male anatomy and was trying to figure out what it was.
I hope your other two pigs are okay. I find weighing them daily for a week or so helps you know they are at least well and eating adequately.
What a beautiful and sad picture. Courtney is such a lovely and loving girl. It's hard to see your children grow up and come to terms with the realities of life and death, but you must be so proud of the young woman she's becoming.