Is my period normal for girls my age?

echoflowerrr
This might be a really dumb question, I'm not sure. It's possible I could just be overthinking things. But when I get my period, I always get lower back cramps, those ones don't go away, and sometimes I'll randomly get pelvic cramps, which will just happen out of nowhere and then stop. The back cramps get to the point where I can barely even get out of bed for longer than just a few seconds without having pain, and most of the time I'll still have pain even if I do lay down. The lower back cramps usually don't stop until around 3-5 days pass or just don't stop until the day that my period should be over, and my period tends to last at least a week. I've also missed school many times because of the pain. Pills don't relieve the pain at all, normally they'll help the first time I take them, and then after that they won't do anything. I was prescribed ibuprofen and I take I think 3 every day, so one on the morning, one in the afternoon, and one and night, but they don't help either. Heatings pads have also stopped helping, and I usually have heavy blood flow, but there are times where my blood flow won't be as bad. I'm not sure if this is normal for girls my age, but I'm also just a person who worries too much so that could just be it. I also usually get mood swings, but I'm pretty sure that's normal. My periods have been like this since I was 11, I believe.
Is my period normal for girls my age?
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