<s>[INST] hi my lmp was april 1 so that would put my due date jan7th. than my first ultrasound said jan 7th as well, but at my 20 week us the doctor says jan 27. than i had to change doctors and they said my due date is jan 6th. and im now 40 weeks and not dialated, and my cervix is closed, so the doctor randomly says im due jan 29th. how is that possible??? what if he is too big? [/INST] Hello dear, I understand your concern. In my opinion the EDD is calculated basing on LMP and first trimester ultrasound. According to your LMP the EDD is January 8th. If you are doubtful about the dates the first trimester ultrasound helps in knowing the EDD. The EDD given in first trimester ultrasound is confirmatory. So both the EDD s from LMP and first trimester ultrasound are same January 7th is your EDD. As you don't have pains you can wait up to 41 weeks if you don't have any complication and your fetal movements are good. So relax. Even after 41 weeks you don't get pains inducing the labor should be done after assessing the pelvis. Nothing to worry. Best regards... </s>