Is Spotting In Early Weeks Of Pregnancy Sign Of Miscarriage?

I am name is Simmi. my last period date is July 26 and Aug 26 i got news that i am pregnant. step 21 i have first Dr. appointment and Dr. said my sack is 5.mm like 5 week 4 days progress. that time week was 8-9 week. after i staring light bledding sports. is this called miscarriage:(?