Depressed~

Recently, I feel like I'm not who I was actually. I felt so blue, so stress. I felt like wanna 'explode'. The simulation assignments is driving me crazy. I felt so helpless. I try to seek for help but everyone was so busy too. So, I might as well kept to myself. Moreover, I don't what's wrong with me and my best friend. They seems to ignore me which add another pain to my heart. Did I done something wrong? Puzzle. No idea at all. I try to asked her but there wasn't any reply. I can accept all kinds of pain but the pain given by a friend is unbearable. I wanna cry. I'm so clueless. What else can I do? I don't wanna lose this friendship........