So I got pregnant on my second round of clomid.. I ovulated on the 19th which was a little late. Does anyone know if the doctors will go by the first day of my last period for how far along I am or if I took clomid do they add it up differently? If I went by my last period i would be 5w1d but my hcg was only 144.9 at the end of week 4 but it did more then double. Any answers please