I think anxiety about delivering your child if real no matter how the thing is supposed to come out! I have had one emergency and two scheduled C-sections. I understand the dread and fear. Make a little play list on your phone and have your husband bring it in with him. I really don't care for the sounds and hearing the dr.s words durning, so I listened to some quiet music right up to my ear and focused on that during the procedure.
Also here is some perspective: this last C-section i went into labor 8 days early. I was in denial about being in labor (I just had so much to do before the baby came). I went to run errands and get a hair cut even though I was having lots of contractions. By the time I realized I was in real labor and got my butt to the hospital, I'd been in labor about 4 hours. By the time I was rigged up to get rolled into the ER I'd been in labor about 6 hours. By the time I was getting my spinal block I was almost going out of my mind from the pain.
A., that sh($@T hurts. Thank God the whole time during the procedure that you do not have to go through labor. Think about the miracle and blessing of modern science and anesthesiology.
Also sorry to go here, but also consider that people used to undergo surgery and amputations with no Anesthesia. Consider the suffering and pain of a woman who needed to undergo a mastectomy without anesthesia. Then consider how lucky you are to be able to have a spinal block. It really is a blessing. I understand your fear, but try and put it in perspective.
I also dreaded the procedure to the point of wanting to be medicated for my anxiety. But in the end, I made it through, and it was more doable than I anticipated. However labor was not more doable than anticipated. Oh no. But the C-sections were a breeze. You'll be fine.