(((((safe hug))))) Jennifer, ask your T for more sessions if he/she can and you can afford them. Honest, direct expert support like a few sessions a week, to get you through right now at least, will do a lot of good. If the sessions can't be increased, then maybe T can help you with daily short five minute phone calls? That will help you center yourself, at least once a day, and have contact with someone IRL who will assure you that what you are sensing isn't happening now.
PTSD is really tough...it messes with brain chemicals and disrupts how the brain files/categorizes normally simple issues to deal with... the longer you put off working on it, the worse it can get. It doesn't go away on it's own.
You won't have to face the assault until you are ready, but you do need help in minimizing these body memories and triggers. Right after my accident, well for a few years, I was not in a good place...I know exactly where you are, and I know the general path you need to take for healing. I'm sure your T knows too.