Okay i just want opinions! My last period was December 29- January 1 always been 4 days long with a 30 day cycle. Based off my last period my due date should be October 5..my Doctor said the baby measured 9 days small and now my date is oct 14. I got my first positive on January 27 when my period was due! I know I didn’t ovulate that late in my cycle, I think I ovulated January 14 based off a very high sex drive. Could she measure small due to me ovulating 2 days later than day 14 and implantation and fertilization took longer or what are some other guesses? Just a small baby?