[x] Stand and fight. Send the pig on ahead to the farm and tell it to send help back if it can. You may be drained but the odds are in your favour now - they'll be vulnerable while they swim across, they've got no concealment to flank you and take you by surprise, and there's only three of them left.
[X] Keep running. Get you and the pig moving, over the hill and across the field and however much longer until you finally reach this mythical farm. You've gained ground. You can make it. Probably.