I’m not a PWS, just a mom. Feel free to take my words with a grain of salt. I don’t have the btdt experience. Talk to the dean, talk to the professor. Offer to do the presentation twice- once just in front of the person grading you for the grade and again in class , but not for credit so even if it’s a disaster it won’t hurt your grade. Offering to do it twice shows your sincere. Hopefully they dont make you actually do it twice. Second, regarding your feelings, you’ll need to deal with that. It will affect your life and your ability to be truly intimate with another person. Learning to love and accept yourself is a tough life lesson, but it’s one that frees you from the chains you place on yourself. It’s way easier said than done, but it’s possible. You are not alone.