It doesnt feel real...

So I am 9w5d pregnant and I feel horrible because when I first found out I was over the moon and pretty much obsessing over everything baby related. I downloaded apps and read each week of my what to expect book as it came and devoted a little bit of time every day to specifically thinking about my little one. But now I don't feel like its real. I have had my first ultrasound (at 8w1d) and I was in awe but I didn't feel like I thought I would. I even saw my baby move around a little bit and I saw the heartbeat but we didn't get to hear it and I just dont feel like it is real yet. I just feel like Im sick all the time. Pretty much my only symptom has been nausea and vomiting. I have been miserable and I feel bad that I'm not more excited for the little bean that is growing inside of me. I feel so sad and hormonal and irritable all the time... its a horrible feeling. I have a great support group and every reason to be happy and excited but I'm just tired, sick, miserable and I dont feel pregnant or excited at all... has anyone else experienced this? Please help.. I need advice.. I feel like Im already a horrible mom.