I see that you're overthinking things. At least, from where am standing, that's what it looks to be.
Take it slow. You just hit a big milestone. Stuff happens one at a time. As you go along, you will figure everything as they should be. This right here is a new phase and anxiety should have no place.
I hope you find clarity on the right path for you. Welcome to an amazing beginning in your life.
Happy graduation!