Talk to Gynecologist on Periods Problem

my periods are usually on time but this month it has been late for 2 weeks and im really stressed about this, today ive been have brown discharge i dont know if thats the sign of my periods coming or not ive never had brown discharge before but due to ramadan and fasting its very confusing, i need to know if i should keep fasting with the brown discharge or not and also please help me in fixing my cycle, why is this happening and how to fix it