What Causes Stomach Ache Along With Nausea And Numbness In The Fingers?

Hi, My name is Debbie. I have a 14 year old daughter who has been sick for 3 1/2 weeks. she has been to multiple doctors, the ER and had several blood test, but her doctors don t know what is wrong with her. She has constant stomach pain with nausea (sometimes vomiting), headaches, body aches all over with joint paint as well as dizziness and fainting and periodic numbness in her fingers and toes. She is much worse in the mornings and cannot get out of bed because she says she hurts all over. She has been sleeping 12-15 hours a day, has missed 3 weeks of school and is so sick she cannot take her mid term exams.