I totally agree with ashiepooh... I would get that checked out
Well, if you have a doctor, I'd call them! Or go to a planned parenthood and you should beable to see a nurse for free. They have a free clinic. I'd definately get on a birthcontrol and use condoms and maybe even the spermacides, take 3 precautions to help control the potential outcome!
As you may or may not know, condoms are on 97% affective, so the birth control and spermacide would do wonders if you don't want to be pregnant!
But still, call your doctor, if it's not normal for you, you need to see someone. It could be an infection in the uterus, or vaginal area, sometimes those will cause thicker mucous like discharge, and in odd colors. So definately seek a nurse or doctor!
Good Luck!