Newly married, 21, virgin no more, hot amazing husband. i have no sex drive. what can cause this?

Multiple causes: There could be multiple causes including physical ones. Speak with a physician and consider talking to a therapist to see if repressed memories or guilt feelings are interfering. You deserve to have a healthy sex life as do all human beings. It is a basic human need like eating and sleeping, so take action and get some help. Let us know how it goes!