Period twice in one month??

I’m 15 years old (hopefully my age takes a part in this), and I had my period this month from March 2 until March 8. On March 26, all of the sudden I have my period again! This is still going on, and I’m hoping this isn’t a major issue. In the beginning of the month, my period was way lighter than usual. Now this time it’s heavy like normal. Help!

Update: Thank you for the responses! Google made me think something was SERIOUSLY wrong. I appreciate the help!