Just remember to be you and be confident that you are normal and prefect and everything will go well. I rarely wear makeup. And I go shopping, restaurants etc always use ladies room and though i get the occasional second glance i am treated well. Smiles, respect, Small talk, etc. People tend to respond to you based on your own confidence.
Don't be afraid to just be you. Don't try to fool anyone. Especially yourself.
And remember, you aren't alone this site among many prove that everyday. Please just relax, smile, and be true, be you.