HI, please help me figure out my symptoms :(

[alissafei]

I'm a 17 year old female. i've been feeling extremely nauseous, drowsy and had a loss of appetite. My nausea kicks in almost anytime of the day but especially after i eat. Being a person who loves food i realised that my appetite has deteriorated severely and i can't finish my usual serving of food. I've also had less sex drive (to masturbate, i don't do sexual intercourse) which is unusual for me as i usually have the huge urge to masturbate almost daily. And even when i do masturbate now its more of a need than a desire and it's hard to orgasm. Thank you for your help.