@anxiousaphrodite From what you have described here about your childhood and adult traumatic experiences it is certainly possible that you are experiencing the symptoms of PTSD.

You might ask the difference between C-PTSD and PTSD. The C in the first one refers to Complex which means that there are multiple and chronic traumatic experiences. Here is a good description from a reliable website at Cleveland Clinic.

Cleveland Clinic-Complex PTSD:

-- https://my.clevelandclinic.org/health/diseases/24881-cptsd-complex-ptsd

What you described in your initial post when you started the discussion sounds very much like panic attacks that come out of the blue and can be a symptom that is associated with PTSD. I have experienced panic attacks that were debilitating and made it very hard for me to function in my everyday life. When I had panic attacks I felt the symptoms all over my body. Just like you described. I worked with a psychiatrist who prescribed antidepressant/antianxiety medication that worked for me.

Is your doctor who made the diagnosis a psychiatrist? Are you seeing a mental health therapist who specializes in PTSD?