I am 37 weeks with our little boy and we don't have a name either. There's one that is probably a frontrunner but we're still really unsure. We have three 'stronger' contenders and then three that are kind of just lingering in the background. I think (or hope) when we meet him we'll just know which name suits. That's what happened with our daughter, we had two names and we both just knew she was one when we saw her.
I wouldn't worry about not having a name, narrow it down to a few and I'm sure you'll know which one when you meet him.
Sebastian's one of our lower three-- tell your mom to get stuffed