Weight gain 😞

I am 27+5 today. Up until a week ago, my weight gain was steady and very much under control. I am not eating differently, I'm exercising 3-4 times a week, and now I'm gaining FAST. I passed my gestational diabetes glucose screen with a 102. My swelling is OUT OF CONTROL, and this week I've gained 4 pounds. I am completely freaked out. If it continues at this rate, I'll have gained 60 pounds by the time the baby arrives.