Gestational diabetes

Brittany • Just got married in March. Expecting our first baby April 2016! Already a momma to 3 fur babies.
I failed the three hour test and got diagnosed because all my readings were 165-194. But I cut down on the carbs the past couple of days and now I'm really low, my last readings were 77,75,60,88. Has this happened to anybody else? I'm confused.