OK ladies so my last period was June 18 my fertile day was July 3& 4. I found out I was pregnant July 17 or 18. so going by my last period I should be 7 was correct? I went for an ultrasound yesterday and the couldn't find much only a thicken cervix which they said was good... If I calculate from the date of it implanted I would only be around 4 wks? so they took more blood work to make sure the numbers are still rising. Anyone else experience this?