Hi, Thank you for posting to us,
Breif answer: Yes you should.
Detailed answer: Severe
pain in hip and back which disturb sleep is always should be concerned especially following an trauma. If you are an elderly person chances of fractures are very high. Because you describe that your skin has
numbness it's likely that neurological damage has also happened in the region. A
hip fracture can cause
hip pain, swelling or bruising, and the hip may look deformed. It may be difficult to move the hip, especially turning the foot outwards or bending at the hip. The fracture may make the hip seem too weak to lift the leg. People usually have pain in the groin when they put weight on the hip. Walking or even standing can cause the fracture to spread, which may worsen the pain. In severe cases, a person with a hip fracture is in too much pain to move.
However
soft tissue injury which is more common following trauma also cause
severe pain in the region. But i't essential to rule out a possible fracture in your case. Specially if you have symptoms like leg pain and numbness of your legs it might reflect a possible
spinal cord compression and it can be progressive unless properly diagnosed and treated. Therefore i recommend you to go for medical care as soon as possible. Thank you.