Kourtney Kardashian needed emergency fetal surgery because her baby had “fluid in his lungs”. The 45-year-old reality star – who welcomed their son Rocky into the world seven months ago – has opened up on the “super rare” health struggles her baby was going through during her pregnancy at the time of the procedure in September last year. Speaking on this week’s episode of ‘The Kardashians’, she said: “We had a terrifying scare. “It’s super rare — the condition that he had — but it’s also super rare and lucky that we caught it. Thank you, God, for a successful surgery. “I’m honestly just so gra…