Period Problems!

Rachel • 21•College Student• Single
So I bleed through my pants not only yesterday but today. I'm actually really worried because my period is usually light to medium but this time it's really heavy I changed my pads between every period and I went to lunch and the class after that and then went to the bathroom to find out I bled through!! That seems highly unlikely that with 2 pads on within 1 and a half hours it could get that bad! And I mean it was bad!! It soaked threw my underwear through my pants. It looked like a blood bath. I had a long kimono type thing on so no one could tell I leaked through but if I didn't have it it would have been extremely embarrassing considering I leaked through a lot. Should I be worried? see a doctor? Do something to make my flow lighter idk help.