My last cycle was July 15-21, 2011 (7 days) compared to my normal six. I was sexaully active the day before i ovulated according to my pt tracker. My cycle was due August 12,2011 but did not arrive until August18,2011. I did not experince my normal symptoms either(sore breast 2 weeks ahead of cycle and slight abdominal cramping along with it). My cycle is a standard 28 days but resulted in 34 days this one month..Wat could b going on?