I am married for 1 yr and 8months my menstruation sometimes irregular. Last July 10 i have regular menstruation then August 7 regular for 3 days only but its color brown then august 23 i have spotted for 3 days, then this September 7 up to 2 weeks i am  delayed. then September 22 i have spotted again.. what is the meaning of this? I am a pregnant or not?!