hello, I really need some help. I woke up this morning. and I ran to the bathroom because I felt that I had bled through my pants and had bled on my sheets. And then I get into the bathroom and I looked down and I had bled through my pad and underwear and pants and there was blood running down my legs. and I go through a pad in 3 hours and it's so heavy and there's so much blood and I need help. Is that normal?????