Is she pregnant?

Question
I have a female pot bellied pig that has been breed, I was not sure at the time that she was in heat, would she let the male "do his thing" if she was not in heat?  She stuck her nose in the air and sniffed him out, while he ws in the pasture with his cow friends!  If Daisy is pregnant, what are some signs I would notice, and if there are no visual signs, what can I do to test her to find out if she will be a first time Mama?!  Any info on this subject would be greatly appreciated!  Thanks for your time.  

Answer
Unaltered males can be rather persistent, and females will comply even if they are not in heat.
Gestation is three months, three weeks, and three days. The only obvious physical signs are a swollen belly and teats, and these will not appear until late in the pregnancy.
Your vet can perform a pregnancy test and provide you with suggestions on how to make her pregnancy and delivery comfortable and successful and assist if there is any complication with the birth or the young piglets.
Sanctuaries and rescues are overflowing with pot-bellied pigs. It's difficult to find good homes for them. You may want to consider having your male altered instead of having more litters. Altered males make much better pets.