Help, please.

Br
Okay so I've been not myself lately. Dealing with personal issues. I keep a lot of things to myself. I have the decency to cry every day/night. I feel like I'm going to break down so bad one day and not knowing what to do. Eat, reading & sleep are my things right now. I want to go out with my friends, but at the end I just want to be at home. A girlfriend told me I'm depressed. Can it be true? Another told me I'm strewing out. Can it be true too? I, myself, feel like the inside of my body is weird at times. Like shakiness and just so damn tired. My eating is not right at all. I also sometimes feel like I want to talk to someone about all these issues I have going on, but at the same time I don't. And that's when I want to break down crying but I hold it in cause I don't want anyone to see me cry. Please, any advice would help. I want to be myself. I'm scared & most of the time I feel alone, when I know I have people that love around me all the time. But I personally just feel so alone.