No morning sickness

Any of you ladies experience this? I'm 7weeks Saturday with no sickness just sore breasts and tired. I have an ultrasound tomorrow and I'm kind of freaking out...I've had previous miscarriages..had a heart beat at 5/2weeks 75-85 they wanted to check me again to make sure everything is ok..thought ultrasounds were supposed to be exciting...maybe in the second trimester