I think this is really common. It happened to me last February. I read 2 Sarno books, saw myself and started the SEP. Then pain decreased and anxiety skyrocketed. And honestly I wanted my pain back! It all makes sense. I started therapy to deal with anxiety and trauma. My physical pain started after traumatic event in 2008 which became incredibly clear within the first day of journaling. My therapist says anxiety is an emotion, usually anger, with a lid on it. Sound familiar? It is all the same thing.
I too HATE feeling anxious so so so so much. I do find Claire Weekes' "floating" on anxiety as it passes to be very helpful, but I easily forget to do that and just fight it, which totally doesn't work.
I'll leave out the details of my story and it isn't yet a "success" but now my anxiety is down and my pain is increased. I quite drinking any alcohol about 3 months ago (this was the right decision for me as I had a problem with drinking even tho most people didn't know it), I'm physically active doing things I enjoy and I'm slowly tapering down my low-dose xanax. It is hard to even type all that because I'm actually acknowledging I cannot do it all. I'm journaling again, not the structured program yet. I'm recently in greater awareness of ANGER and my sub-conscious efforts to hold the whole world together with my care-taking and strength. I still feel like this is a process but I truly believe I have TMS and the only way out is through.
Best to you!