Diabetes test? 25 weeks today!

Ha

So I had my 25 week app today - urine fine, blood pressure good, carbon dioxide test fine, heart beat strong and baby moving loads ☺️ - However; I am looking BIG! (No shit 🤣) and as my last 2 babies were 9lbs 4 and 9lbs 8 they want me to be tested for gestational diabetes 😩😩😩 I didn’t have this with my last 2 babies, has anyone had this done? Also have any of you measured big and had big babies before but tests came back ok? I’m hoping it’s just because my family all have big babies! 😬