She says I'm measuring a week less than I am but it still ends on the 19th.... I'm just confused because my bf does all this with me and he's the only man I have been with but now he's having doubts because the conception date and Idk what to do.
Its because not everyone ovulates on the same day. Its not 100% accurate, it could be several days off. Youre fine
Just go by what your doctor says.