Worried about my unborn son?

I am 39 weeks pregnant,first pegnancy.Ready to meet my little boy. But I can't stop worrying something will go wrong & I will lose him. I've had a completely normal & healthy pregnancy so these fears are a bit unfounded I guess. I just feel like maybe I don't deserve this amazing gift I'm about to receive. Is this normal at all? Anyone else feel like this? I'm very nervous about the delivery,I guess that could be part of it.