I have an u/s scheduled for Monday, 11/14 and will be 7 weeks by LMP, but I think only 6 weeks and 3-4 days by ovulation. With my other pregnancies I saw HBs at 6 weeks, 4 days each time. I'm wondering if it's 6 weeks, 3 days will it be too early? What's the earliest you've seen HB on an ultrasound?