Feeling like I can't physically do this!!

I'm nearly 37 weeks and as time gets closer and closer my anxiety gets worse and worse to the point where I feel like I can't do it. I can't go through labour. It's absolutely terrifying me to the point I will just sit and cry to myself. I can't wait to meet my son but I'm just too scared of it. I know I obviously have no choice but I just feel like my anxiety is going to take over. And that's going to put me and my baby at risk.