When I was pregnant with my daughter 18 years ago, I went to agroup. They took family history and did comeplete blood and urine and cell tests.
My main doctor asked me if diabeets ran in teh family and if i ahd ever been Dxd I told him was I wasdxd borderline when I was little,a dn that it runs in teh family very badly. So they did a GTT and they dais I am showing signs of gestational and they put me on a great diet. Of course being married ot my ex I rarely ate, though he did!
Anyway they agev me a handbook on it. Lucky for me they gave me insulin shots every checkup alongw ith B vitamin with minerals.
I think a doctor wodl be remiss if he didnt and it was suspected or confirmed.