Is she sick?

So I got my baby hedgehog three weeks ago and she is nine weeks old now. I realize now that's too young. She's pretty jumpy and scared most of the time.but she loves being held in her blanket. But I can't get her to eat dry or alive mealworms, any type of fruit or vegetable or hedgehog food she'll eat expensive cat food but she won't even look at good hedgehog food. She ran on her wheel at first but now she doesn't, spending day and night asleep and now she's pooping and peeing in her bed too. Also she has a bad habit of biting me. I'm very gentle with her and I hold her well. She's also in a quiet dark room. What should I do?