4 weeks 6 days ultrasound

Is this normal at my gestation? I know I’m super early. I had went into the ER for sharp pains on my side & just wanted to make sure everything was okay. I took this picture of the ultrasound on the computer while the ultrasound tech walked out lol. But is it normal to just see a small sac this early with nothing in it? I’m 5 weeks 2 days today, so this was a few days ago.