back pain from hell

Kaitlyn
I have a L4/L5  injury in my spine that i got from a car accident. My back typically hurts on a daily basis but this is crazy! I cant sit or lay down without my entire back tensing up and becoming very painful and almost sore feeling. Its mostly my lower back where the injury is and in my shoulders. The only thing thats helping is standing, but who wants to stand all damn day? Lol 
I am not on any medication, and obviously cant take any since prengnant lol i also cannot for the life of me crack my back on my own. 😭😭
What can i do? Stretches? Yoga? Anything! Ill probably bring up the pain during my first ob appointment on the 28th.