Mom making me get an ultrasound for no reason?

Anonymous
I'm 15 years old and I went to the doctor for my physical last week. My doctor started poking at my stomach area and said my stomach is too fat for my weight. Then her hand was cold so I was uncomfortable and she saw that. Then she went out and told my mom in a whispering voice that I should get an ultrasound. I am a virgin so I don't know what they are thinking is wrong with me. I am a bit underweight and my stomach sticks out like one inch, and always has. I already tried to tall my mom the ultrasound is unnecessary but she won't listen. Why would they want me to get an ultrasound so bad? Any ideas?
Updates
+1 y
Thanks for the advice everyone, I will go get an ultrasound knowing that it is not unnecessary.
Mom making me get an ultrasound for no reason?
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