We were the same way...I just tried to keep the attitude that our baby will have a name! For a while it was keeping me up at night running names thought my head so I just let it go and sure enough our baby has a name lol! We ended up agreeing on a a boys name 2 weeks before dd was born and we named her when she was about 6 hours old. I'm glad I stopped stressing because when she came out we both agreed that none if the names either of us liked ahead of time fit her and we picked something completely different and her name is perfect for her . I would just keep trying with DH and I'm sure your baby will have a name too!
Danielle, happy wife and Mommy to B, A and newbie J!