Bleeding after ultrasound

Jessica
Went to doctors today for my first tv ultrasound (7 weeks 4 days). Saw the baby and heartbeat of 141. 
4 hours afterwards I have a gushing of bright red blood that soaked my entire underwear. I don't think I'm cramping, but now I believe anything I feel would be bad. 
Has anyone bled (not spotted) after an ultrasound?? 
Edit: doctors office said it's normal and to monitor if I continue bleeding or if I have cramps to call back. Said ultrasound could have aggravated cervix. 

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