postpartum depression

Hi girls. I'm currently 8 weeks pregnant. I know I still have a long journey ahead of me but I'm so scared that I'll have postpartum depression. I keep thinking about it. I'm scared that I won't feel connected to the baby. That I'll feel like I've made a mistake. It's my first pregnancy and I just keep hearing about it happening to many woman. Thank god ive never had any anxiety or depression problems before. I'm just so paranoid about it. What can I do to relax? Is there any way to prevent it? Any advice would be appreciated!