Ultrasound shows minimal growth

I went in for an ultrasound the end of March expecting to be around 7 weeks pregnant and the technician measured baby at 6 weeks 2 days with 89bpm. Doctor ordered to come back in 2 weeks for another ultrasound. Yesterday I went in for the follow up ultrasound and baby measured at 6 w 4 days with 87bpm... Doctor wants me to come back in a week for another ultrasound but the writings on the wall.. My husband told her he couldn't stand to put me through that again. I don't know what to do.. Anyone have a similar situation?