I need support

So, I'm 8 weeks and a couple days pregnant. And I was just diagnosed as a diabetic. And I'm on a strict diet, and was told if I stray away from this diet I can cause a still birth. And I smoke cigarettes. And at this point I'm starving and cant eat. And with me not being able to eat, I'm chain smoking like crazy. I feel like I cant enjoy this pregnancy because im having to watch everything. I'm miserable. I cant stop crying. I just want to eat. I couldn't enjoy my nephews birthday, I cant go out to eat, I sit in my room and cry. I need all the help and support i can get.. please help me.