Hip pain from injury that won't go away after 5 weeks. now causing low back pain, inner thigh pain by groin, and buttocks pain. what can i do?

Sacroiliac ligament: Sounds like you are having referred pain from sacroiliac (SI) dysfunction. Would be good to be evaluated for this by your family doctor. Best treatment is a small injection of anesthesia and steroid into the specific area of the SI ligament. Depending on injury, could also be a hop labral tear that can give same symptoms. You need to be evaluated in person.