yes 12 to 13 weeks is the ideal time for the 1st trimester scans. try showing your reports to Dr Avneesh Kaur at Medcare Women and Children. She specializes in fetal medicine and is an Ob/Gyn herse...
Thank you so much for your comment but I originally didn't know that I have to do the scan between 12 and 13 weeks and the Genesis center did not mention anything to me. Now I am late to do the scan and it is the most accurate one :/