20 Centimeters (2005) on Netflix

Plot summary

Marieta earns money as a prostitute in Madrid and puts it aside for the sex change operation she wants, though she would prefer a legitimate job. Her housemate and best friend Tomás keeps finding ways to spend or lose what she saves. Narcolepsy makes her fall asleep at sudden moments, and in her dreams she sings and dances as her true self. She meets Raúl, who works at a market and loves her as she is, including the part she means to have removed. Marieta is happy about the love she has found, yet she still wants the operation in order to feel whole.