Hello (: 

I started my period on october 31st and it ended on the 6/7th with a little spotting. I had unprotected sex on the 7th and I took plan B on the 10th. I was spotting for a couple of days and then on Wednesday, my boyfriend and I were getting intimate and I started bleeding a LOT. 

This morning when I used the restroom there was a lot of blood in the toilet and I'm starting to get worried because it's not going away. I'm 21 and my periods have been fairly regular my whole life and I'm not on birth control. 

Everything else in my body seems fairly normal, other than me having a sinus infection. I don't have any heavy cramping/bloating/lower abdomen pain associated with this. 

If you have any idea on what's going on, please help! (: Thanks!