9 weeks today! Anybody else?

Michelle • 27 years old Wifey & Momma of a 3 year old. Currently expecting #2 in July 2015
Also I haven't even had an appt yet I have my 1st appt next Wednesday at 10 weeks I'll also get an ultrasound I'm soo nervous!!! I was thinking of bringing my son who's 3 1/2 to see the ultrasound but not I'm
Questioning if I should. What if there's something wrong I wouldn't want to have to tell him right there. He already knows mommy has a baby in her tummy I'm just not sure if he should be at the ultrasound now. Any thoughts?