Overdue Pot bellied pig

Question
I have a potbelly that should have delivered at least 4 days ago. She is still quite active and eating well, should I be concerned at this point? Do I need to bring in the vet? What might suggest she is close to delivery or perhaps having unseen problems? This is my first litter ( and last ) the male has now been fixed. I read everything I can find to be knowledgeable about the pigs but seem to be at a stand still finding out info on this subject.
Thank you in advance for any input.

Answer
Pot-bellied pig gestation is 3 months, 3 weeks and 3 days, or about 106 to 114 days. Males can be fertile for up to 30 days after neutering. If there's a chance the pregnancy occurred after surgery, that's when the countdown to birth begins.

Usually a few days before delivery the sow will develop milk lines along her belly, and begin making a nest. She may also appear to be constantly trying to go potty.

It's a good idea to talk to your vet now, before your pig goes into labor. Establish an emergency plan, how to contact him if something goes wrong, and who to call if he is not able to come right away. Your vet may want to be there during the birthing or check on mom and the piglets the next day.

As long as she is active, alert, eating, peeing and pooping and does not appear to be in any distress, I believe she will be Ok. The first stage of labor, before the actual piglets are born, can last as long as 24 hours. She may be agitated, cry and act uncomfortable. If this lasts longer than 24 hours, or she refuses to eat for 24 hours, it's time to call a vet.

The second stage is active labor. If this lasts for more than 8 hours, or if she is in obvious distress (panting, unconsciousness, etc), or if a baby appears breach or gets stuck, then it's time to call a vet. This is when the emergency plan is needed.

The piglets may come quickly, or there may be long gaps between births. They may come all at once, or one or two may come well before or after the others. After all the babies are born the placenta should be expelled, and that completes the birth.

It's ok to wipe the babies off but do not take them out of the Moma pigs sight for the first 24 hours, or she may reject them. Let each piglet choose his or her own teat, that's the one they will use for the whole time they nurse.

Keep the area warm, but not hot, ideally warmer on one side and cooler on the other so the piglets can choose the spot where they are comfortable. Even little piglets like to drink water or dilute juices but make sure there is no danger of the piglets drowning in a water bucket. They also might try nibbling on the foods they see Mom eat.

Veterinary Care of Pot-Bellied Pigs by Lorrie Boldrick (Blackburn) DVM is an affordable, understandable book with a couple of chapters on reproduction.