My period is late by 6 days and I tried testing today mrng and the test came out negative

Dear mummies, plz help! My period is late by 6 days and I tried testing today mrng on my second urine (around 3.5hours after first urine) and the test came out negative. I tried the cheap kit available in drugstores. I have been having white discharge everyday and nothing else. Should I wait and retest? #pleasehelp #advicepls