Hosting get together giving me anxiety

I am a mom of 2 little girls and we bought a new house a month ago. I have mom friends who I am dying for them to come over and see the house. We're still settling in though and I think it may be too soon as I want them to see the house when we're done with everything. They all have little ones themselves. It'll end up being a total of 13 guests (with their husbands and kids)- 17 people in the house.

I honestly have never hosted a friend get together before. I am a very neat freak and clean and don't wear shoes in the house either. I get super anxious just thinking about having a bunch of people over.. like omg don't touch that or omg be careful your hands are dirty and so on. Pleeease help me get over my anxiety and ways to calm down.