Hi, i had an ultra sound at 17 weeks and da technision couldnt exacly determin babys gender because baby was sleepy and had umbilical cord cover its privates, but he looked on different angle and said its a Girl but didnt show me her girl parts and didnt give me a percentage, but he said he wants to see me back wen ill be 20 weeks, so can boy parts be developed after 17 weeks? Why would tech tell me its girl but would like to See me back to determin exact gender?