Early ultrasounds

Magan
Can someone tell me why almost everyone is getting such early ultrasounds? (I thought they only did this if you were a high risk with previous miscarriages- yet everyone is posting 5weeks to 8 weeks) my doctor won't even see me to confirm until 10 weeks (which will be next Wednesday) and everyone I work with says they won't do ultra sounds until you're at least 12 weeks.... Frustrating.