Possible GD even after passing 3 hour glucose test?

Hello mommies!!

Did any of you fail your 1 hour and/or pass your 3 hour glucose test but exhibiting GD-like symptoms?

Back story:

I'll be 30 weeks tomorrow. I took my 1 hour glucose test at 26 weeks. I barely failed it by 135. I took my 3hr two weeks later and passed it with flying colors. However, the issue I'm still having horrible symptoms after eating (especially lunch) such as, light-headedness, dizzy spells, drop in blood pressure, fainting spells, weakness, and fatigue. When I eat lunch, I feel like I just been hit by a bus. I've had countless ER trips with this pregnancy.

My doctor told me last week "you don't have GD but you still failed 1 hour and your baby is already a bit on the big side. You need to cut off carbs and sugar and up your protein." When I eat protein filled foods, I still feel sick and I'm pretty much out for the rest of the day! Yesterday, I went to get iron infusion (I'm anemic as well) and I literally just ate chips and juice and I almost passed out in the chair. They took my blood pressure and it went from 123/78 to 93/60. They had to give me extra bags of fluids afterwards. My hematologist said that was not anemia. I can't tell if my sugars overreacting or under reacting. Anyone been through this or similar?

TIA