It's okay.
Real talk, one trans person to another, there is no wrong way to be yourself. And feeling afraid of something big and life changing is completely normal. Sane, even.
Anyone who says you need a vaginoplasty to be a woman is just flat out wrong. You are who you are. Kind of an "I think, therefore I am" kinda deal.
Take your time. You got all the time in the world. Talk to a therapist, and if you want to try again, do. If you don't, then don't. It doesn't make you any less of a human being.