Not as far Along as I thought??

Amanda • Currently stay at home mom, I have one son who is 18 months. Preggo with #2!

Hey ya'll!

Just wanted to know if this has happened to anyone else?

My last period started January 22nd, and going by that day I should be 10wks. But when we went to get a TV ultrasound donethe other day the baby was only measuring at 8 weeks. Does that just mean that I ovulated later than I thought? My period tracker says I was fertile the 2nd thru the 7th of February and did the baby dance with my husband around that time. Just want some reassureance(: