Colonoscopy on Monday morning

So I'm scheduled to have a colonoscopy on Monday morning.
This will be my third one, but it'll be the first time I've done it with prep for just one day! I remember it taking days when I was a kid and the stuff they made me drink was as thick as molasses.
I have a bowel to skin fistula. Not sure how explosive diarrhea is going to effect it.
Also, I am full of air. All. the. TIME! I can sit on the can and get rid of everything, but five minutes later, I am full of air again. I wake up in the morning, go to the bathroom, and I'm emptying my guts before I can even pee!
And I itch alot. I scratch my arms and I break out in welts all over the place so bad that friends want to take me to the ER. I blame the remicade, but who knows? I figure I just have to live with it.
I recently started dating and I have taken up the practice of not eating dinner, just because my stomach is so noisy and I don't want my date to hear it. Plus, the anxiety of dating has really made me not want to eat even more. The less I eat, the better I feel, which makes me feel better looking in an anorexic way. It's all twisted as fuc.
I don't know why, but the whole scope thing on monday is making me very emo. I enjoyed my last meal yesterday and now I'm having a liquid dinner of beer and more beer, sorta prepping in advance. heh heh
Hence, all the rambling! haha
It's not fear I'm experiencing, just a strong feeling of resignation, that something is going to be revealed which I will use to make me feel even more emo, but I won't be able to do a thing about!
Can a GI find other fistulas just with a colonoscopy?
Does it make a darn bit of difference if he does?
What if my guts are narrowing?
How can I feel this bad even when I'm on remicade?
It's not like a surgeon would even attempt to cut all this out or that I would even risk it.
I'm so tempted to just tell everyone about my colonoscopy on my monday fb status.
And I know that it'll just be attention seeking and pathetic, but I don't know if I can stop myself. I want everyone to know I'm not as healthy as I look and I deal with this everyday!
I'm also sorta seeing someone and I haven't told him about what's going to happen monday. I don't know why. He knows about the crohns, but I just can't seem to tell him about this. Before he knew about my disease, he only saw me as healthy and fit. I told him about my CD and he said all the right things, but I don't think his bubble has really burst yet because I don't look sick. I sure as hell didn't tell him about the fistula.
What do I do?
Any opinions on any of this rambling will be appreciated because I am bored and buzzed.
ROWR

It sucks!
I swear there's a fb conspiracy goin on right now because all my friends are posting pics of food!
Plus, it's my niece's 4th birthday and they're also chowing down on all kinds of grinds!
:(
I can't believe all I have to do is one day of prep!
It's crazy.

I go in in a few hours still.
No biopsies?!?!
That's crazy?
Do they normally not take biopsies???
I'm trying to stay positive, but something tells me things will go a bit differently for me.
blargh

Mine went fine.
They said there's no sign of active Crohns aside from the fistula.
Even though my fistula is rectum to skin, the rectum looks great!
But he found a polyp in my terminal ileum, which he removed.
I don't know what that means.
??????