I think i may either have an anxiety disorder or acute stress reaction and i dont know how to handle my anxiety as it has been debilitating lately and keeps me up at night and my heart hurts and i overthink so much?

you may be correct. Keep a detailed diary of what brings its on and makes it go away. Your body is talking to you. Take good notes and share with your Dr. There are a number of good treatments including classic Transcendtal Meditation

All of these are signs that the sympathetic nervous system has been activated by some type of threat or stressor. Best advice is to talk about what occurred with a therapist or PCP; download some Progressive Relaxation media from You Tube, and practice it for a month every day. Stress can have long term consequences, and the loss of sleep alone can have health consequences; do not ignore.