I grew up in the middle of nowhere and feral cats showed up all the time on our farm. If there is a female cat, a male cat will find her. Even if you didn't have a male. Not judging, just trying to inform. I would get the male fixed asap, and there has to be a vet within driving distance. And if the female is pregnant I would have her spayed as soon as she is allowed after kittens are born. Good luck!