Toddler Girl symptoms of diabetes

My daughter is 2, soon to be 3 and I’ve noticed that she’s been having symptoms of diabetes. But my husband says i always overthink about things too much.

But I noticed lately ...

When she breathes she grunts

She always tells me her tummy hurts but I know that she isn’t constipated and she doesn’t have a bug

She complains that her eyes hurt and head

She’s such a picky eater

And she’s so tiny for her age. She’s 2 years old weighing 27lbs.

I’m planning on taking her in. But I wanted to know if there is anymore serious symptoms I should be aware of