Recently diagnosed with GD at 30 weeks??

I was recently diagnosed with GD at 30 weeks and am FREAKING out! I didn’t think I was going to test positive considering I have only gained 6 pounds but I have always been a bit heavier. I have been looking all over the web for answers on what to do and what GD can do to my unborn baby and I am worried the most about stillbirth. Every site I visit says that women with GD have a higher chance of stillbirth… and the thought of it has kept me up at night! Can anyone help me out here?