Hello, I Slipped In My Bathtub & Fell Really Hard

Hello, I slipped in my bathtub & fell really hard on my left bottom area about 6 weeks ago. I've had terrible pain in my periformous muscle & it spasms all day & night causing severe sciatic pain down to my ankle. I take ibuprofen for pain & Vicodin at night to help me sleep. I've been miserable. What should I do to make this go away? Do I need an MRI or physical therapy enough? Should I get an injection to numb pain? Please advise. Thank u!