I agree with Open Eyes, c-PTSD is so complex...my own treatment involves some pretty powerful meds, and did involve some innovative treatment. If reading and self help could do the trick, I'd have been cured decades ago. My therapist forbade me from self help forums the first several weeks,saying there was real danger in getting bad advice, however well intended. What I learned in therapy for complex PTSD was vastly different than what applies for depression.
You mentioned a referral, do you mean for a psychiatrist? For meds? Only part if the equation. I'm not on anything like Xanax or anything, my psych doc refuses to put anyone with PTSD on addictive meds long term , if that helps. (I was on it for about 2 weeks only til my mood stabilizer was approved by my insurance).

I understand the fear of going out, being around people and crowds, if that's the issue. If it helps, therapy helped me within, about, 6 weeks. I'm still struggling at times, but before it was 15 out if 10, and today it's maybe 2-3 out of 10...sometimes less. It may never be zero, but who knows? I'm hoping for the best. You should too. It's hard work--but worth it!