Not Pregnant

I missed my period for two months mga sis naka tatlong PT na ako it turned out negative lahat. But I have experienced unsual vaginal discharge which is now lng to nangyari sakin pero Wala po syang amoy. Pero sumasakut Yung right ng lower back ko saka kumikirot minsan right pus-on ko. ?? Please Yung mga naka experience ng ganto pa share naman po.