Two periods!?

Ka
Hey everyone! Just seeing if anyone has ever had this same issue.. I got off my period the 29th of July. Then started again the 11th of August. Today is currently the 15th and I'm still bleeding as in a period. At first, I was afraid I was spotting due to pregnancy. After taking several test to conclude that I am not.. And due to the cramps and overflow of blood it just looks like Mother Nature blessed me twice within one months span. I have been under a lot of stress and I also heard taking plan B can easily cause you to menstruate due to harmones. Was wondering if anyone ever had this same issue. I'm 19 and NOT on birth control. Also, irregular periods are not something that's ever happened before. They always come at the same time. Mother Nature has always been very strict with her timing with me! Thanks for reading ❤️