son 4 with hirschsprungs and 32 weeks pregnate with gastroschisis daughter

my son was born in 1997 with hirschsprungs, he had corrective surgery and is fine now. I am pregnate 32 weeks monday with a girl she has gastroschisis. I would like to know if there is a genetic link between them, and would also like info on gastroschisis and prematurity. I have found many links on the web
but none of them give gestational ages of when these gastroschisis baby are born . I know the intestines begin to swell due to the toxins in the amno fluids , i am going to have my 32 week level 2 ultrasound monday october 8 2001
I am afraid of being induced so early . on emed.com i also found 2 diffrent links of complacations after gastroschisis one of them being hirschsprungs is this ture ? please respond asap