I'm sorry to hear you're struggling. We've all been there and come through and you will too. Soak up all the success stories on this forum and watch Forest's success story on youtube. Forest's youtube got me started on my TMS healing journey and gave me the confidence to believe I could heal. Read and re-read Dr Sarno, or better still - grab his books on audio and go about your day with his reassuring words. This will help dissolve your fear.
Steve Ozanich's book Great Pain Deception gave me the giant leap forward, that got me running again after 22 years of chronic foot pain and fibromyalgia. I highly recommend his book also.
You symptoms WILL pass. You need to believe this. You may need advice around pain meds and how and when to wean yourself off them.
Tell your inner bully to take a hike! Stick with the SEP and reassure yourself that you've found the wonderful support of the TMS wiki community and have started your healing journey.