Had my first Appt yesterday to do the dating scan. I have inconsistent periods so had no date to give for last period. Tested positive 11 days ago & when I went only a sac & measuring 4 weeks 5 days. PA said that doesn’t match up so doing HCG tests. She also noticed a fluid or blood sac in my uterus as well. First round of HCG is 962 & I do another Saturday. Worried as this is the first time I have had anything like this happen. Any input or similar stories?