Currently Pregnant and Fighting Depression

I’m 16 weeks and all pregnancy is supposed to be a happy time but for the past couple of months my depression has been hitting me hard, tried to take my life.. I been going through a lot with losing my job , car , also got 3 other kids to take care of.. my kids daddy really be trying help me but it’s something I can’t overcome.. and my granny finna be gone for 4 years this month and I been taking it hard .. haven’t gotten over the fact she actually gone she was my backbone and I been having it hard since she left ... I’m just tired of fighting everything in my head !!!!