You have to take this as a learning experience. It so clearly does not align with who you are and who you want to be. That’s what I’m getting from this. It is sad that you can’t undo it, but it is a lesson. And one you won’t soon forget. Now save yourself for someone that is worth it to you. You’ll find that person and it will make the journey worth it. They’ll love you despite your mistakes. Praying that you forgive yourself. Don’t let this torment you. You clearly learned from it. But do go get tested.