Gestational diabetes diet

I've been diagnosed with GD and just don't really know what to eat. I saw the doctor and don't feel like she did good job explaining how much of what I should be eating. She just said basic things like eat whole grains and eat small meals throughout the day. I just don't know if I'm following it right and feel very anxious. I already am exercising daily and I cut out sugar and am measuring my glucose but I just feel lost. I don't know what levels I'm supposed to look for or what to do if it's a high/low number. And I don't know what to eat. I'm not a fan of meat either so I'm limited to even less. Anyone have any advice?