Depression. What will they be thinking?

I have been feeling so tired and lazy to even get up from my bed, have food, anything and everything. I am not able to concentrate anything and enjoy anything which I was passionate about in the past. I always feel I am not needed in this world and everyone will be happy without me. I feel i am alone and even if surrounded by people no is there for me. I have read about depression online and i feel I am passively suicidal too. I am afraid of life but not death. I am too anxious to talk with people. I think twice or thrice before speaking to someone. I am afraid I'll lose them too if whatever I speak hurts them. Even after I spoke I think about it again again. Would it have hurt them? What will they be thinking? My mind will always be functioning on these tasks along with what I am doing. Sometimes its so stressful to thinks about two or three things at same time. Even sometimes I feel no border between real and my imaginary world. Sometimes I feel I don't need to to be treated even.