Weight loss! 31 weeks

I was borderline diabetic so I'm not eating nearly as much as I used too! I'm not small I weigh about 214 now and 5'2 I'm so scared though I haven't gained weight through out the whole pregnancy ! Has anyone else been losing weight or had a baby and it be okay regardless or weight gain / loss! Nurse said that's great I'm losing weight? I'm like really?!!