Help with what to eat

So I’m 211lbs..my weight has always been a struggle for me. I lose, I gain it back. When I had my four year old I had severe preeclampsia and because of complications that ask run in my family more specifically with my mom, my ob is very concerned for gestational diabetes and other issues.

If anyone has advice on what to eat or recipes to share, PLEASE share with me! Besides trying to eat more fruits and veggies I haven’t done anything different and I’m new to this. Open for gluten free or anything