I m 7 wk first a doctor advised me for usg at the wk of 12. But a few reason or circumstances I changed the doctor.and this gyno doc suggested me to do usg today for confirming the due it right time for usg at the 6-7 wk of pregnancy?

Please suggest .

Yes, it good to chk the fetal pole n heart beat... Trust your doctor

Ya, it is better to get a US to check the fetal heart beat.