Just want to tell someone who understands

So for the past three to four weeks ive been constantly saying im over being pregnant i want him out well i went to my high risk doc today for a growth scan currently 37+3 abd baby boy is measuring almost 42 weeks already 8 lbs so he says hes gonna recommend to my ob i be delivered after 38 but before 39 weeks which is next week now that the time is here im starting to freak this is my first baby 1 miscarriage now that i know he will be here next week instead of the 23 rd im second guessing am i really ready for this will i be a good mother there is still so much to do