I’m terrified of leaving the house

I have a 2 year old and a 6 week old, and I am absolutely terrified of leaving the house without my husband. I keep having nightmare about taking the kids to the park, getting distracted and one of the kids goes missing, or going shopping putting the baby down to grab something and forgetting to pick her car seat back up.

Im not a forgetful person, and I don’t think this will actually happen, but I can’t get over this feeling.