When will my sister get her first sonogram?

She took 4 HPT. All BFP! Then her gynno sent her for blood test. BFP. She is 5w3d. She has an apnt. on the 17th of this month. Do they do a sonogram then? Or when does that happen? I have been TTC for 2 months now, she stole my BFP. lol So i am so0o excited for her.