Next Step: Remicade

I am young girl, 24 years old, that lives in Sweden and I am having rheumatic problems. The pain started when I was 14 years old. I got diagnosed with enthesitis about a year ago that may develop to reumatoid artrit. My mother has reumatoid artrit, and even if the doctors says that it may not be genetic because the results of being a genetic disease show just half positive, I am afraid that I may get it in the future. I already have a lot of pain.
I have so far taken Sulfasalazine and Naproxen sodium for the inflammation and pain. It hasn't worked as it supposed, so now my doctor is recommending Remicade. I have read a lot good things and bad things about this medicine but I am still concern with the side-effects. I am a student teacher for high school and now I going to study my last semester. I have to work 5 weeks of practice in a school, and probably I am going to getting in contact with a lot of sick students because its falls here now. how careful one must be against colds and such diseases? I am still in the process of testing for tuberculosis before they start the treatment, I just waiting for the final results after the blood test. It may take 2 weeks from now to start the treatment.Please help me know if Remicade actually is the best answer. My boyfriend wants us to maybe live in South America a couple of years and work there. But if I start Remicade, that plan will have to wait because you only can get the medicine in the country you got diagnosed. But in the other side. It may cure my problems for the rest of my life. My doctor said I may just had to take it for 2 years. Is Remicade worth 2 years of my life? If it works I think it does, but what if it isn't?