BLEEDING BEFORE MY PERIOD...

I AM CONCERNED...FOR THE LAST FEW MONTHS I HAVE HAD SOME LIGHT BLEEDING ABOUT TWO WEEKS BEFORE MY PERIOD. IT IS NOT ENOUGHT TO EVEN US A PAD, IT IS ONLY PRESENT WITH I CLEAN MYSELF. IT IS NOT THE SAME COLOR THAT BLEEDING FROM A PERIOD IS AND IT ONLY LAST A DAY OR SO. WHAT CONCERNS ME IS THAT I HAVE HEARD THAT THIS COULD LEAD TO OVARIAN CANCER. I DO NOT HAVE HEALTH INSURANCE UNTIL THE FIRST OF THE YEAR...WHAT SHOULD I DO? WHAT COULD BE CAUSING THIS? PLEASE HELP ME FIGURE THIS OUT...