Baby boars usually leave mum around 18 - 23 days old, and can begin to mate soon after this. You have two issues here. 1. Age of baby, is he/she eating and drinking well enough to thrive? If not you will need to supplement with syringe feeding. You can ask for further advice on what/how to syringe feed if this is the case. 2. Sex of baby, you need to get a positive ID as soon as possible. IF, your bub is only 2 weeks old, he will be ok in the sow for a couple of days until you can go to vet and get confirmation. If bub is a boar, as Laura says, they cannot stay together. xx