Girls, I just have a question for older girls, why would my back and hips hurt for four days on period?

The first day was the worst. I couldn't move or talk because my back hurt so much. I felt like I was dying. Is that normal? And so far, it's been 4 days and the pain does disappear, but it comes back. I would go to a doctor but... I don't know. Anyways... why would my back and hips hurt for 4 days in a row on period. I just feel like I'm dying or something. Nothing else hurts. At this point I don't know what I should do. What should I do? What could be a cause? And how can I please stop the feeling of my back hurting a lot and hips?

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And this is the first time I've felt this way. Before I didn't feel well but I still kept walking. I was able to hide the pain but now I just feel like I can't. But in the past I did feel this way but it only lasted a day or so. This time it's been 4 days in a row. Please... what do I do?
Girls, I just have a question for older girls, why would my back and hips hurt for four days on period?
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