Struggling with Gestational Diabetes and Diet Restrictions?

I got diagnosed with gestational diabetes a couple weeks ago. I have been under strict monitoring and sugar checks and it isnt helping getting my sugar under control. I'm now starting insulin tomorrow. Has anyone gone through this ?? I'm kinda freaking out with everything. I was already on a restricted diet because of bad acid reflux but now it's more restricted because of the gestational diabetes. I'm getting really tired of only being about ti eat a few foods .