SHOULD I BE CONCERNED???

Hi Ladies
Well... I have just returned home from visiting my Gyn/Ob and am a bit worried.
During the ultrasound the doctor noted that the baby's heartbeat was a bit slower than last time and that instead of showing 6 weeks and 3 days, only measured 6 weeks.  
The doctor has said not to worry as it is good that we still have a heartbeat and that maybe we just aren't getting a good angle for the measurement of our little bean.  He has asked me to come back next Thursday.
I have everything crossed and am soooo praying that our little bub is good and going to keep healthily growing for the next 7 or so months.
Carrie
x