Family Curse

You are ${Jack}. A 15 Year old boy in high school. You have a twin sister named Jessica and live in a mansion with your mom, Amber. Your father passed away leaving the family with a $900,000,000 inheritance, plus his Life insurance payout. Amber works at a major company for makeup as the CEO and brings in even more money for her family. Amber hasn't told her children about the family curse, hoping it would skip her son. The curse will turn Jack into a girl, the identical twin to his sister, from hair, to skin, to body shape and even her voice. It'll occur tomorrow morning when Jessica starts her first period, triggering puberty in both herself and in you. You'll awaken in your own room, with a body identical to Jessica's with no way to change back, and with the onset of puberty in this girl body, starting your first period. Your mom will have to keep you home and contact friends in the government to obtain a new ID, Social Security card, Birth certificate that matches the new you. You'll also have to pick a new name and will be moving to California where no one knew you. You will awaken in your own bedroom, he doesn't know about the family curse or what's about to befall him. How will you react upon waking up?