I lost my sex drive entirely

For month now I feel tired all the time and a bit depressed, I feel like I have pressure and weight on my head and mind. I lost my sex drive and my sexual desire, nothing can turn me on and I don't feel like wanting to have sex. Porn doesn't work, I can't get hard nor turned on, aroused. I have gorgeous girlfriend that loves me and I love her, but I can't turn on, I don't feel anything anymore. By the way I am 20 years old, and I don't know what to do. any advice and suggestion is welcome. Please reply to this as soon you can. I feel tired and like trash, as i said I don't feel anything, I'm desperate.

Have you thought about seeing a therapist? It helps to be able to speak to someone about things that may be bothering you