Depression and early pregnancy

Hello. I am struggling today. I struggled last time with my pregnancy too to the point where I would get upset and bang my head on the floor. I do not want to get it to that point and I know I should be happy but I don't feel supported by my family. I am 19 and they kicked my boyfriend out who was living with me and won't let him in the house to see me. I thought I had a miscarriage about two weeks ago and went to the doctor, wasn't home for a couple days and my family only called me to ask for money. I feel so down and alone and confused. But I love my baby and I refuse to get to that point again. I'm crying as I write this. But I will get through this and I will be a good mother because I know how it feels to be alone and I don't want anybody else especially my baby to ever feel that way.