Estrella dear,
This is definitely depression. No one should have to go through this or feel this way. You are very important. Please make sure to get in touch with a councelor or therapist soon. Often our families don't understand, oddly, this can be quite common and it is so hurtful and frustrating when we are in pain but they can't see it at all. However, you wouldn't go to a family member if you had a heart problem either, you would visit a doctor who could diagnose you correctly. Some meds might really help.