As the title suggests, I have no idea on my LMP (slack I know ). DH and I only DTD on July 18th and 19th - and my previous cycle was abnormally light. Cycle lengths regulated to 33 days for about the previous 8 cycles, however the last two (where I have no idea on dates) seemed to have longer cycle lengths, albeit by 5 or 6 days.

First blood test on July 27th - HCG was 226. Dr said 'the president had an expected gestation of 2-3 wks'.

Second blood test on August 2nd - HCG was 2256. Dr said 'the president had an expected gestation of 4-5 wks'.

After reading Arimeh's Eden thread about the accuracy of dating scans, I'm concerned that all I can really go off of for an EDD is yep, a dating scan .

And I just query how the scan 'aligns' with blood test results? There was only 6 days between blood test one and two, yet a larger increase in the expected gestation.

Bah! I'm confused!!! HELP!