Girls, what do short periods mean?

Anonymous
My period usually lasts 2-4 days. The first 2 days are the heaviest flow (sorry for such detail!), and then it rapidly declines near the end of the second day. This has been happening for quite a few months now. I'm not sure if it's normal, but I feel completely fine. My mom says that it has to do with my weight loss (which was a few years ago), but I think she just says that because she hates it when I diet. I'm 17, 5'2, and I weigh 103 pounds, if that helps.

Thanks!
Girls, what do short periods mean?
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