worried

Tatiana

Sooo today i’m 7 weeks and 1 day and i went to my ultrasound but my baby heart rate was still at 83. last week my baby heart rate was 83 and measured about 3.4cm and day the baby only grow about 5.2 cm in 6 days… ??? Did anybody go through this in their pregnancy ? My doctor said it could be cause i conceived late but i’m nervous