My baby will be tiny...

My perinatologist dr told me that Bc my daughters umbilical cord only has two ventricles that she isn't getting as much nutrients as she should so since they've ruled out defects and chromosomal abnormalities that she will most likely be pretty small and they need to moniter her growth. If she stops growing they will induce me. My last baby was born at 36 weeks and was 5lbs 5oz so I'm worried if she's going to be tiny how much smaller than my son may she be... It has me stressing. Im 21 weeks now but I just feel bad that I may not carry her even until 37 weeks and she may very well have nicu time :( anyone else have to have their baby induced due to the baby not growing anymore? How far along were you? How long were they in nicu if at all? Just trying to wrap my head around the possibilities...