Have gestational diabetes, and low amniotic fluid. shouldnt it be high?

Should be normal: If your gdm is in good control, your afi should be normal. If you are on insulin, most obs start weekly afi checks, once or twice a week nsts @ 32-34 wks. An afi <5 is too low (oligohydramnios), 5-8 is borderline, >25 is too much (poly). If not normal or borderline, your OB will give you a plan of action. Usually gdm pts don't have low fluid unless something else is going on. Check with your doc.