Dear Danni,
Please remember that you are ill. Specifically, don’t spend hours and hours on high activity things like sitting up when you should be resting in preparation for college, otherwise you will spend the next <insert time scale here> in bed, in a lot of pain after painkillers, trying not to be sick and so dizzy you feel like you’re on a rollercoaster. It’s not pleasant.
Yours sincerely,
Your Body.
*hugs* I’m sorry you’re finding it hard to get the balance right.