35 weeks and sad.

Has anyone else felt anything like this? I’m 35 weeks pregnant and i have felt SO sad every single day. Crying and inconsolable. My brain spirals out of control, about what’s coming when the baby comes, about what my relationship with my husband will be like, if I’ll be able to be a good mother. What is normal? What is hormonal? Do i talk about this with my OB? Or write it off as just the hormones from the pregnancy? This all came out of nowhere and is all brand new to me. Any opinions are welcomed.