I am depressed and feel hopeless i really need help please help?

i am a depressed and homesick college student i have been all year but i just went home for a weekend and now came back and i am feeling very very depressed i cannot concentrate on anything i miss my parents i missmy friends, whenever i picture my parents in my head i start to cry. i hate being alone i miss home i hate my roommates i hate growing up, and it is really getting to me now. i have not ate anything in two days. i feel so sad, and i have thought about suicide, but i can't do it. i have seven days left before summer, but i still have 3 more years of this and i cant do it. these will be the worst seven days of my life at this rate. i am sick tomy stomach. i need to call my parents but i am embarred and ashamed. i dont want to sound like a baby. i need to end this. i need to end everything. this is a living hell somebody anybody please help me. adont tell me to see a schoolcounselor, or go be more active or some BS. please help.