Also, so you're aware, and really, it depends on the doctor, usually when they do ultrasounds in the first trimester, they are vaginal ultrasounds and not abdominal ultrasounds (though I did have a quickie abdominal u/s at 11 weeks when the doc couldn't find the heartbeat on doppler). But you're so busy paying attention to the image on the screen (it will start looking like a tiny baby at that point), you won't pay much attention to the vaginal ultrasound procedure itself. (It doesn't hurt, but it may cause some spotting afterwards, as might the pap smear.)
My husband has come with me to all but one of my appointments even though they're pretty routine at this point. In the beginning, I wanted him there if I were to get bad news. Also, it is his baby too and coming to the appointments makes him feel more involved in the pregnancy, not to mention, it's important for him to meet the doctor who will be delivering your child.