What is going on with me?

I recently left a traumatic situation, and ever since I left, I haven't really been feeling like myself. I feel more numb, not as in touch with my emotions as I was, when I was in that situation, I also have high anxiety, am either picking my lip, or pulling my hair, and I can't seem to stop. I also have nightmares, or wake up in the middle of the night, feeling sick and nauseous or thinking something's going on when it isn't....What do I have? What is going on with me? Also the people who traumatized me so to speak, still contact me, because they're my family, so I don't know if this is preventing me from healing? Thanks for any advice.