hi your problem could be from plan b it does tend to through periods off for some time this could be the reason for you having a lighter period. but if your still worried go see your doctor and get a pregnancy test done. hope this helps. good luck
i had unprotected sex i took plan b and now i have my "period" 2 weeks early and its lighter then usual. am i pregnant? . i've been waking up in the morning not feeling 100 percent i have been drinking more water then usual and i have been more tired. i took plan b about 6 hours after sex and its been about a week since i had the unprotected sex i'm scared i might be pregnant and this isn't my period its just spotting