Doctor told me to eat 0 carbs?

Newly diagnosed I’m 28 weeks. My doctor told me 0 carbs. Just white chicken white fish very lean beef and green vegetables. I’ve been trying to stick to it. But I had 0 carb balance tortillas and eggs. Because I’m struggling to get enough calories in. Yesterday I only ate around 1100 calories especially since there’s no food easily available to me on the go. the amount of food I’d have to eat is stressful/time consuming if I only ate those 3 or 4 things. and with the price of groceries is crazy. I can’t help but feel like it’s super restrictive ? My fasting numbers are 115-120. I had half a banana the other day before I saw my doctor. and it shot my sugar over 246. I’m feeling so hungry and defeated. I wanna try and add some other things in but I’m scared since my numbers are high literally no matter what I do. I was also advised to stay away from salt and sat fat so I can’t even season anything. I have no idea if this is the right way to go about it ? I see other people saying they eat strawberries and whole wheat pasta. I’m assuming it’s after levels are in check. You can have some carbs ?