Welcome to the forum. One theory is that Crohns is caused from bacteria, so the right antibiotics could help with your other symptoms. Hope it helps and the lancing sounds like a good idea.
Probiotics are a good idea too (taken at least 2 hours after the antibiotics)
If you havent had a chance to consider diet changes, the elimination diet is a good way to go. Eliminate all wheat and dairy to start with. Brown rice, organic chicken and cooked/steamed vegetables are a place to start. (Our daughters symptoms almost disappeared overnight with this diet) I can tell you more if interested. My daughters are currently seeing a Naturalpath and also getting some good vitamins/minerals and herbs as well.
Everyone is different and some of the big guns: Prednisone, Remicade or the Mesalamine enemas might be necessary at this time.
Let us know if we can help. A private message is fine too.