just wanted to wish you all the best!
I have had 2 c/s
one at 33wks and bubs lungs were under developed breathing assistance needed
one at 38wks and bubs lungs were fully developed no help needed

even if 39wk was better than 38wks at 38 u are still classed as full term( after 37wks) and most babies lungs would be perfectly fine at 38,39,40+ weeks