Hello, this is Dr. Linda. I hope I can help with your question today.
I am so sorry for your concerns about Piggy.
First, how many piglets were delivered, & are they nursing & generally doing well? This would be an important clue in that my biggest concern would be any undelivered/retained babies.
It would be helpful to try & obtain her temperature rectally. Normal temp is around 99-100F.
If Piggy was acting & eating normal prior to her delivering her piglets, then we must assume something has gone wrong in the birthing process, & this is most often a stuck or malpositioned piglet, or uterine inertia. If your hand is small enough, & with enough lubrication, you may be able to reach into her vulva to see if a piglet is stuck. If you can feel a foot or tail, gentle traction may deliver the piglet, but quite honestly, it will be very tight in there. You will most likely need the assistance of a veterinarian, especially if this results in Piggy needing a C-section.
Please let me know what additional advice or information you may need. I will try to help as much as possible, but I think you will need to have your vet take a look at things.