Hi i have 28 days period, i usually go on my period for 5 days the 1-3 days after experiance brown discharge. but this month i'm on day 15 and i'm still experiencing brownish discharge, it does not have any fun smell, not itchy. should i worry?

Irregular bleeding: Causes of irregular bleeding include: hormonal fluctuations due to stress, too much exercise, thyroid imbalance, uterine fibroids or wall thickening. Most probably, this bleeding will self adjust so that your cycle is regular. If you are concerned about other causes, talk to your Dr for testing if this pattern persists.

Extended period ?: Prolonged bleeding needs evaluation by a gyn physician to determine the cause. If pregnancy is possible, obtain a serum HCG test, as pregnancy outside the uterus (ectopic) needs immediate attention. There are many causes possible for extended bleeding, most of which have simple solutions.