first scan

MJB

Hi everyone, I had a scan today due to some very minor spotting on the weekend that has stopped. We saw the sac, yolk and fetal pole and even a heartbeat (105bpm) however I noticed the CRL is 3.3 which is about 5w4d and per my LMP, I should be more like 6w0d. Is this a big deal? seeing dr Friday but I’m nervous. Thanks in advance.