anyone know anything about simponi?

I have tried Meth, was taken off that because my gums were swollen, bleeding and with the other side effects my Rheumy said I'm allergic to it. So we went to Humira. Been on that for several months and then noticed that everytime I give my injection I would break out with hives in my abdomen. So, again, I was told to get off it because I am showing signs of being allergic. I am supposed to start Simponi next week and wanted to know if anyone else is on it and their experience. I've not heard anything about it so I'm just curious.