Hi , Wow I'm sorry that this is happening. Is Actemra working for you?
I've never tried Simponi but I have switched biologics. I was on Cimzia and I switched to Cosentyx. It was a scary decision but the best decision I have made!
I hope Simponi will work wonderfully for you!
Here is a link that I think you might find helpful https://ankylosingspondylitis.net/clinical/switching-biologics
All the best,
Ali (Community Member)