What should I do after graduation?

You will go back to school a) when you're ready and b) if it's right for you. You've got at least 30 years of work ahead of you. And that's bare minimum. No matter what you do, you'll gain life experiences that you would have otherwise missed out on. You'll meet new people and potentially start making connections with people who might one day help you get into graduate school or help you get a job afterwards. Don't be afraid to do something that's not exactly what you originally had in mind. It'll probably turn out amazing. And even if it doesn't, guess what? You've got yeeeears to make up for it.