went for my 8 week appointment and when the Dr did the ultrasound, sure enough I'm pregnant, but the baby was only measuring 6 weeks and no heart beat yet. I have an 8 month old that I breastfeed, and the Dr said that can affect my cycle, so that ovulation could've been later than usual. but I can't help but worry that I'm waiting for a miscarriage. any other moms think they were further along and found out otherwise and were OK? he also said there was fluid around the sac