You may have to go to the next tier of drugs, the immunosuppressants (Imuran, 6MP, etc.). Usually they will put you on Prednisone or another steroid (entocort) until these drugs kick in because it can take months.
Lately though, more and more doctors are going the immunosuppressant along with biologicals (Remicade, Humira) right away.
You need to educate yourself on the different kind of treatments so you can discuss the options with your doctor based on your disease.
I like steroids for short term only, they did work for you while you were on them, the question is: can you stay on them for the months it may take for Imuran or 6MP to kick in?
Immunosuppressants have a list of side effects, but I haven't had any except for some elevated enzymes so others will have to speak up. I like these drugs for the next tier (my opinion), before you bring out the big guns (Remicade, Humira).
Remicade and Humira work well for many people, Remicade is limited in my opinion because most people will build antibodies to it eventually (which I did) which not only prevents it from working well, but can cause many side affects. I don't know much about Humira as it was too expensive for me to try, but it seems to be working for a lot of people. I do think it's pretty new, so the side effects aren't well known yet.
All these drugs have side effects, it will be up to you to decide what you can live with, what you're willing to try.
Hopefully one or a combination of these drugs will help you, if not, surgical intervention is always an option, but in my opinion, depending on the severity of the disease, surgery should be a last option (there are times when it's the only option, but that doesn't seem to be the case yet). In most cases, a surgeon won't do surgery unless you've tried all/most of the other options without results (unless again, it's an emergency situation).