Colette, have you tried Ensure, ModulenIBD, Elemental028, Fresubin, Peptamen or enteral feeds like that? At least they decrease the symptoms dramatically, they don't seem to be a long-term treatment for adults, that treats inflammation, but maybe it helps you to feel a bit more normal. I have been on it exclusively for a while but symptoms returned when I went off of it. I started a full elimination diet, adding one food by one, but symptoms returned even without dietary change at some point. Enteral nutrition might be a good way to feel "normal" for a short while, believe me, it also feels good emotionally being normal for a while again, even if it is only short term.
The most important think probably is to find a doctor who wants to help you and does not want to treat symptoms but a human being. I hope you can find a doctor who is understanding and has enough knowledge about the disease.
If there is no local support group, why not get in touch with the other younger patients in the waiting room or when you wait in a line? My doctor treats many many IBD patients, so there is always someone to get in touch with. Often I just ask: Crohn's or colitis? If there is misunderstanding you know that that person does not have IBD ;-) If not, the rest comes naturally.
Try not to hide your disease. If you are open with it, people can understand, otherwise they don't know what is going on and think you are absent, tired, angry or whatever. You don't need to go into detail for everyone, but you should with some people. Choose one friend that you talk to first and you will see that it's much easier than you think. Your friends want to be there for you, that's what friends are for, because they love you and they would appreciate the same think if they were in your place. Later, talk to other closer friends. Apart from colleges or people in the work field, I talk to everyone about my disease, but this has not always been the case. I have also hidden my symptoms from my family in order not to see them worried. Your parents are there for you even though you are an adult, you don't need to talk about every aspect but for me it is helpful to let them know. You don't show any weakness or something but it's responsible to talk honestly to them. Of course, it's your disease, but you don't need to carry it all by yourself. Feel free to message me anytime by a private message.