What can I do about a lower back and upper thigh pain?

My lower left back has been hurting for a while but noting severe. Ever since yesterday i've been struggling to walk. Then my upper left thigh started to hurt to the point where it hurts to take a step or even bend my leg. I look like a girl when i walk and I have school tomorrow, what can i do to releive... show more My lower left back has been hurting for a while but noting severe. Ever since yesterday i've been struggling to walk. Then my upper left thigh started to hurt to the point where it hurts to take a step or even bend my leg. I look like a girl when i walk and I have school tomorrow, what can i do to releive this pain?
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