So I’m 11 weeks today with my rainbow baby and found out about 2 weeks ago my sister is pregnant as well .. she should be around 6 weeks 5 days based on her lmp .. she had an ultrasound at 5 weeks and they didn’t see anything but a gestational sac .. no yolk sac no baby , she went again now 6 weeks 5 days and still nothing . US tech said the safe measured 6 weeks 1 day but still an empty sac . I’m thinking possible missed miscarriage or ectopic because she has been having bad pain on her side .. Can someone tell us what this mean ?