Ramzi method??

Jessica • Im 29 with 2 boys- 6 & 12. My bf has 2 boys 4 & 5. We have been together almost 2yrs and want to try for a baby of our own to add to the family. I have endometrios, so it has been hard.
I just had an ultrasound done yesterday. Baby actually measured at 7wks exactly. Even tho the scan says different. Anyone tell anything yet for the ramzi theory or not good enough?