I have crohns disease which has spread outside the bowel, and hav...

I have crohns disease which has spread outside the bowel, and have started taking 40mg a day. i started 2 days ago and my head has been raging with pain since a couple of hours after i took the pills. I am Writing this at 2 am because i can't sleep. Paracetamol and codeine won't work and i dont see how i will last 5 weeks like this! its like having my head permanently in a vice. Last night My legs were aching really bad i couldn't sleep. (any clues to why this happened?) A few years ago i went on prednisone but not for long as i swapped to budesonide (which is a muuucchhh better drug for the intestines) but now my crohns has spread outside the intestines i have to take prednisone again! I gained about 15-20 kg last time and it causes me great depression and self confidence issues. (just a note that the budesonide is just as bad, perhaps worse with the gaining weight perspective, personally i kinda miss not being hungry or not being able to eat. LOL) It made my crohns pain subside but are the side effects REALLY worth it? i don't think so... I like to avoid steroids as much as i can... I'm sick of looking like a chubby kid (i'm 18 but when im on steroids my face looks like a chubby kid's face and its embarrasing)