How to determine if may Gestational Diabetes without lab test?

Hi Mommies! I would like to seek help and ideas regarding Gestational Diabetes, I am worried na baka meron ako since yung ibang signs is meron ako na akala ko normal lang due to pregnancy. I'm on my 27th week and due to lockdown di na ako natuloy mag patest, di ko rin ma contaxt OB this past few days to ask. Yung mga signs na nararamdaman ko is *Pagod, sobrang hingal lalo pagkakain *Antukin minsan sa hapon kasi putol putol tulog ko sa gabi *Minsan nagigising ako sa madaling araw na gutom na gutom at uhaw na uhaw. Pero on time naman ako kumain and I always drink milk before matulog *Madalas na pag urinate (sabi sa nabasa ko often mistaken daw na ok lang during pregnancy) medyo naguguluhan lang ako I'm a first time mom, and I don't have any idea about it. Thank you for your answers