I think Dr Google will scare you to pieces.
DD has had colitis since she was about 19 and has gradually learned to know how to manage it herself. She went through a far rougher time then she needed to though because it was misdiagnosed as IBS for over 5 years while she was at uni.
The increased risk of bowel cancer are I believe, if it is left untreated for around 10 years.
Hopefully your medication will kick in soon and you will start feeling a lot more comfortable. DD gets tired far more easily than she used to and it took her a while to respect her body and get the rest she needs. Now she does that, she manages far better.
She works full time as a special needs teacher and works really hard. She hasn't had any flare ups for around a year and hasn't missed a day. For her, flare ups start as passing blood, feeling achey and unwell. She has a colitis nurse she can call for advice at any time and a sympathetic consultant and for the past 2 years has been lots better.
It's good to have a nurse who you can phone because any fears/problems whatsoever, you can run it past them. I know DD had the poor woman on speed dial and would literally phone her about anything and everything until she felt more confident.
You will get to be your own expert after a while and know what you need to do to keep yourself well. Has a colitis nurse been mentioned at all?
Many many people lead really normal lives with this so try hard not to panic. It's a big shock when you get a diagnosis and it's understandable to feel scared and think you'll be onto stomas and all sorts at any time, but that really is a last resort.