Need more ammo

Ok--Now I feel like this week is a scene out of a zombie horror flick. My wife is sick and yacking, the other kid is puking every 15 minutes, and the youngest is running like a faucet at the other end. I'm the only semi well one in the house and it feels like I'm humanity's last bastion of health. The zombies are closing in and I only have 1 shotgun shell left. What to do?