Is it one or two

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So I found I was pregnant at 8 weeks my hcg levels was 173,024 and I’m concerned on how high they are with them being so high at the time. I got an ultra sound done but it was by a new tech that was training and the duration of the ultrasound was less then ten minutes. Is there a chance there is two babies instead of one and they missed it? I ask because my sister and brother girl was pregnant with twins and that’s what their hcg was at. Should I push for concern?