Hello, Light bleeding with late period may indicate sign of early miscarriage or hormonal imbalance with co-existence of stress/ anxiety, irregular diet habit, wt change etc. Here, you should undergo one blood test for beta HCG and one TVS scan to confirm product of conception if any. In exclusion of pregnancy, other relevant investigations like USG scan for pelvis, complete hormone assay, blood sugar, endometrial biopsy etc are needed to be done. Consult with gynecologist for next line of management for this condition. Avoid stress/ mental upset, take healthy diet with Vitamin & iron supplements and maintain genital hygiene properly. For direct consultation with me, you may visit my profile on http://www.healthcaremagic.com/doctors/dr-soumen-patra/63326. Here, you can upload image for more suggestion. Be well & take care.