Had my first ultrasound today, I should be 7.5 weeks. (I know when I O'd, was using OPKs and halfway charting.) Baby and sac both measure 6 weeks. I have to go back in 2 weeks for another ultrasound.
I was a week off with my estimate, thought I was 7 weeks at my first appt and was really 6. Sometimes you ovulate closer to getting AF than you think! My OPK said I peaked twice, which I know didn't happen, so I'm guessing my real peak was the later one.
OPK's alone aren't the best at telling ovulation because you can gear up to ovulate and then not. To really know you would want to temp. That being sad you could have just ovulated late. Also there is a margin of error on ultrasound machines of plus or minus 5 days at least there has been at the last two obs I went to
I got BFP our 1st month trying, which was also right after my 1st post-partum period. FF says O was on say 21 (I'm guessing based mostly on OPK), which is later than the few cycles I charted when TTC DS, those I O'd day 18-19.
Re: 1.5 weeks behind
Mommy to my sweet boy, JG, born May 15, 2014
Baby #2 due 4/26/16!
I got BFP our 1st month trying, which was also right after my 1st post-partum period. FF says O was on say 21 (I'm guessing based mostly on OPK), which is later than the few cycles I charted when TTC DS, those I O'd day 18-19.