Menstruation twice a month?

So this month I've got my period twice. After my first period this month , a brownish discharge appears not everyday but more like every other day or 3 days. Than 2 weeks after my first period i got it again. Its heavy flow and of course the period cramp annoys me ( always experience this on my period days) . Anyone have same experience want to share and why is it happen? i’ll go to obgyn but wait until my period done.
Menstruation twice a month?
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