I just turned 20 yesterday, I'm 5'3", 110lbs, female. Always had excessive discharge, but when I went to the bathroom I noticed a really long string of, i don't know, mucus stuff? hanging out of me... It went all the way to the water, and started white but was bloody by the time I wiped it away. I'm due to start my period tomorrow, but this has never happened before. Is it normal?