Puking in front of the Principal

So I couldn't stop vomiting this morning. And I ran to the bathroom and right outside (the bathroom's next to the copier) is the principal. She hears me, though she doesn't say anything. But 45 minutes later when I still can't spend more than 10 minutes away from the trashcan/toilet, I have to tell her (of course, she already guessed) and she happily lets me go home for the rest of the morning to puke in peace. Back at school now, tummy settled, but headache still in full force- guess we can't have it all.