My lmp was 28/01/14 however I have PCOS and very long cycles. I'm pretty sure I am 4 weeks pregnant as I tested the weekend of the 9th of March and it was bfn then I tested on the 14th and it was bfp. I them did a clear blue digital which said pregnant 1-2 which would put meat 3-4 weeks pregnant. It's hard to say for sure! Anyway i need to go to the drs soon and I know they are going to argue my dates and try date me from my lmp. I really don't want an early scan as this did that with ds and I was really early along and you couldn't see anything and it caused so much stress and worry. Has anyone had any experience of this? Ds was conceived without have AF for 6 months so I'm used to my crazy long cycles but I don't want the stress of it all this pregnancy!