How to tell when my pig will deliver, if, in fact, she is pregnant

Okay. I have pot bellied pigs that I am trying to breed for meat. We have limited space here. It appears that my female has not gone into heat in about a month and a half or so. Her vulva is very swollen. It looks much different than when she was in heat. I can not tell if she is pregnant. I have read that this is normal. I have been watching for a milk line. She has always been larger than my male, so I can't judge her size compared to him. This is my first experience trying to breed pigs. My male is still trying to mate with her, but she won't allow him to. I'm not sure if males try to mate with the females while they are pregnant. I have read numerous books and on line articles. I'm still just as ignorant as when I first started reading about them. (Sigh) Any advice would be greatly appreciated.

Blessings!

I don't know anything about pigs, but most female animals will have a discharge when they are pregnant. I know with my goats, the bucks kept trying to mount the does after they were pregnant. May be the same with pigs. BTW, welcome to the forum.

we don't raise pigs either we trade with the local Amish when we want a pig to have processed. We take them straight to our processor, they only come here in packages. With cattle our bulls are always trying to breed the cows, until a few weeks before the cow gives birth. The cow will separate herself from the herd to give birth, and rejoin the herd with her calf when the calf is three days old. If you have room for your sow to get away from the sire she will likely make a "nest" a day or two before she births. Otherwise I am not sure what you should expect.

Welcome to the group, take a moment and introduce yourself please