3rd March 2009 19:57hi all I had my first scan today in the rotunda - going by my LMP I am 12 weeks +5 days - however the baby size is measuring more around 10 weeks (this makes sense as I am fairly sure of ovulation dates and possible date of conception. BUT - I was told to go with the lmp date + 40 weeks so if people ask do I now say that I am only 10 weeks or do I stick with 12 weeks. I didn't tell people till I thought i was 12 weeks but now I'm really confused. All looked good on the scan so thats definitely a weight off my mind. any help or advice would be great!