Passing out

I’m 30 weeks 3 days and the last week I’ve been so overly exhausted and can’t really do anything even just trying to get up takes work.. talked to my midwife and checked my iron it’s low but not crazy low. Then today I tried to clean and almost passed out, Shaking weak and can’t see straight. I tried having some sugar but it didn’t help. I failed my glucose test as well... so maybe it’s GD? My midwife office isn’t calling me back called twice two days ago and waiting for them to answer. Taking it easy in the meantime but I have 3 dogs and a 4 year old to care for so I really need to get back to being able to function.