Is It Normal To Get Vomiting And Tiredness While Having Migraines?

my 8 yr old had a migrane bout one and a half week ago ... took her to the ER for IV fluids because she was vomiting, they gave her IV and Zofran with Toradol ... she is very small and light, her weight is only about 45 lbs. Today, she can't wake up ... has no energy, her eyes feel tired as she says and has been sleeping all morning. She gets to bed usually at around 9pm. Yesterday, she went to bed around 8:30pm, but claims she had a hard time sleeping .. was woken up early morning from nightmares. SHe is not on any medications except for regular vitamins for kids. Should I have her scanned for any problems?