normally i have a 28 days menstrual cycle ,but this time my periods are late my ten days, i have watery white vaginal discharge , sometimes i have cramps in abdomen. so i test home urine test on the 11 th day but it come negative,then what should normally i have a 28 days menstrual cycle,but this time my periods are late my ten days, i have watery white vaginal discharge, sometimes i have cramps in abdomen. so i test home urine test on the 11 th day but it come negative,then what should i do next