I'm currently 6 weeks and 4 days pregnant and there was moderate free fluid in my pelvis cul de sac I want to know if that could cause a problem with my baby it's my second pregnancy my first one ended in a miscarriage? The ultrasound also says irregular gestational sac and I have dark brown spotting but it's very little and I have no pains whatsoever should I be worried? At 6 weeks 2 days they couldn't get a heartbeat is that normal?