Good luck with the scans today harimad and goneswimming.
overreaction. I think its hard for fathers to connect in the same way, they are 'one step removed' from the process. My DH is similar in that he didn't even want to talk about having a baby until the 12 week scan had passed as he didn't want to invest his emotions too much (I think a lady in his work miscarried around 12 weeks and he was really surprised when it happened, so just assumes miscarriage is much more common than it is).
You might find things change when you start to have movement and get to the 20 week scan. There's definitely someone in there at that point for them to connect to!
Sweetcharlotte try not to worry about symptoms coming and going, just look after yourself. As you'll have read from me and other posters, we don't have bumps yet either. If anything we're all just a bit chubbier but it doesn't look like a baby bump yet.