I just went and finally had a pregnancy test done at the clinic and they told me based on my last period I'm exactly 9 weeks. If I go by the exact day my husband and I had sex when I ovulated I'm only 7 weeks 6 days. Is my date more accurate since I know the exact day or is the doctors more accurate? I can't get in for an ultrasound until May 3rd or I would just wait to see what the baby measures.