Hello Kirsten. When I was diagnosed 2 years back I was 16 and in my final year at school. I hardly turned up for the last two months and only came back for my exams. I completely understand what you are going through. Luckily enough I didn't have to see the school nurse and the school where completely understanding at why I was missing so much school and they just left me too it.
I see in your Biography that you say that you don't know anyone else with crohns. I have exactly the same problem, I know none who has crohns. That's why I find coming to this forum so important. Its such a great place to let your emotions go with people who really understand what you are going through.
On the education side of things, have you got any exams coming up? Are you aware of what exam concessions (allowances) you get? I get 20% extra time and un-timed breaks.
You also said "bad bm"? Do you mean bm as in blood sugar levels or as in bm short for bum, diarrhea kind of bum!?
Hope you feel better soon,
Liam