primary elective c-section

I talked to my OB today about wanting a c-section and I cried and cried. I was honestly trembling. She recommended I see a therapist about my anxieties around birth. But we didn't arrive at any conclusions, she said it's too early to make a decision, it's definitely an option and right for me to alleviate anxiety but she wants to discuss the risks with me first. And she thinks I may feel differently as I feel the baby kick or see the anatomy scan. Even after my conversation with her, I couldn't stop crying.
I'm 15 weeks now and I'm scared and I don't know how my baby will get here. Birth has always dissuaded me from having children at all and while this baby was unplanned and I'm so happy to have her, I don't know how I can bring her into this world and stay calm during the remainder of my pregnancy. 
I've spent a lot of time researching and reading about birth stories and I feel like it's not for me. I get so much anxiety when I think about it to the point that I cry uncontrollably.
I'm so lost - my husband doesn't really weigh in on this, he thinks it's my choice whether I want to attempt a vaginal birth or a c-section. I don't know what I want. I'm just dreading the countdown to my due date and I don't want to think about it.