Alcohol in food and pregnancy

So today I made chili in a slow cooker and my husband likes to add alcohol. It was barely a shot worth of captain Morgan’s rum. I put the lid on and put the slow cooker on low for 2hrs. It tasted delicious but I’m worried that the alcohol didn’t cook out of it. I’m 20 weeks and normally don’t feel lightheaded, yet I’m like really lightheaded. I’m worried about my baby boy..