I feel much the same way: low, kind of numb, angry/grumpy much of the time. I dunno -- I hope it's the hormones. You want to be overflowing with love and warmth for the miniscule little being growing inside, and I have moments of that, but mostly I just feel a sense of burden right now (exhaustion, increasing nausea, secret to keep from the workplace, etc).
On the other hand, we had our first ultrasound this morning (6 weeks and 2 days along). And there it was: all 3mm of it, heart beating like a tiny beacon in the night. We even heard the heartbeat, because the clinic has such amazing technology.
We had the U/S as a final appointment with this fertility clinic we used to get me pregnant. I don't have any fertility challenges, but my spouse is a woman and we decided to use a fertility specialist for the IUI. So hence the early U/S when most people don't get one until 13 weeks. It was just a confirmation, but what a treat. It made me feel a little more connected to this overwhelming (numbing) reality.