I am 26, i took plan b,24h after un protected sex. but then my period got delayed.and now i have been bleeding for more than 7 days.

About Plan B...: Plan B can alter the menstrual bleeding for the cycle in which Plan B was taken, and sometimes the next cycle too. One should be sure to check a home pregnancy test about 3 weeks after sex, because Plan B works most of the time, but not all the time. If vaginal bleeding symptoms are very worrisome, a visit to one's Ob-Gyn or primary care doctor may be needed.