PCOS, Metformin, and Gestational Diabetes?

Allie • Pregnant with first Clomid/Trigger Shot Baby! Married, Texas, 30!
Hi!
So, I have PCOS was put on Metformin to help "regulate" my cycle (which my cycle still never can on it's own unless I took Medroxyprogesterone to jump start it). Anyway, I took other Fertilty Drugs to become pregnant (Clomid and a Trigger Shot) and am now 27 weeks!
I was just diagnosed with Gestational Diabetes and was wondering if anyone knows if you can become diabetic after pregnancy? The only reason I ask is because Metformin is a medicine that people with diabetes take (and I was prescribed it to become pregnant). So, I'm unsure if I have a higher chance of diabetes after pregnancy or if it'll most likely go away after my sweet boy is born?
Thanks!