Pregnancy: Ages 25-34 Community
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Ultrasound and Gestational age

I just did my first ultrasound today. I thought that the baby was 8 weeks based on my lmp and the ultrasound age is 5 and a half weeks.  The clinic took my blood to look at my hcg but didn't explain anything to me.  I don't know what to think. is this a missed miscarriage? was the time wrong? how could it be that different? i know that i conceived the child 5 weeks ago and i was positive on the pregnancy test 3 weeks ago.  the math doesn't make sense to me.  can someone help please?
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