I've had AS for about 17 years (Sacroiliatic area, spine & chest)
I take painkillers (Tramodol HCL SR) & anti inflammatories (Aceclofenac) twice daily, 4 tablets in all
Physio does help, as does keeping active, if I stay sat for too long or have a massive lie in I pay for it with more stiffness & general aches
I have good days & bad days, the good certainly outweigh the odd bad day.
I still ride as hard & fast as I dare pretty much without a thought to AS
Santac what meds are you on?