Thank you for writing. The simple answer to your question is, Yes, you should see a therapist. Being beaten and bitten as a child can have far reaching consequences. Please don’t minimize your own pain or the strong possibility that your feelings (or lack) and impulses may be an indication of the hurt and anger you’ve barely contained since.
Websites (even this one) aren’t going to give you the answers you seek. Websites can only provide general information. You are a unique person with a unique story. That story needs to be heard by someone who has the skills and compassion to help you make sense of it and to help you manage your feelings. A list of emotions is beside the point.
Please contact a therapist who has experience with trauma and teen issues. You deserve the help — both for your own sake and before you act out rather than talk out (or write out) your pain.
I wish you well.