I’m miserable

Does anyone know if they have Gestational Diabetes yet? What are your symptoms? I have not had my test yet but I’m wondering what the heck is wrong with me. I’m completely miserable and have become a prisoner in my home. I Can’t leave! I get sick every time! I’m either too hot or walking from the car to Walmart completely wiped me out and I’m done. I send my husband grocery shopping now because I can’t make it through the store. I get dizzy and feel like I’m going to pass out. I only have one thought, and it’s that I have to lay/sit down immediately. I don’t care if it’s the floor. My muscles are weak as though I have just gotten through the flu. I’m so tired of feeling like this. I’m completely useless. I have so many things I want/need to get some and I just can’t. I know not every pregnant woman feels this way. Do you think it’s a sugar issue?