I have irregular periods, I spot in between my periods, and for the past 4 months I have has an increase in menstrual flow between the dates of te 19th and the 20th of each month. So I am assuming that the should be an expected time of muy periopds to begin from those dates. Anyhow, my last period which last abt 4 days was on September 19,2006 and ended on 9/22/2006. I then started spotting again on 9/25-27,2006, stopped. Then on 10/1-2/2006,stopped, started 10/11-13/2006 stopped again. And of course between those times I have had unprotected sex, we are trying to have another child. Now there has been no spotting, NOTHING. I have expected to have my cycle by the 19th an dno later than the 21st. Still NOTHING. I took a pregnacy test on the 20th and then on the 26th and both test were neg. Now my breasts are sore, and all last month form the beginning I have been extremly tired and thirsty, I have have lower back aches and cramps. WHAT DO YOU THINK IS GOING ON, I'M SO CONFUSED!!!!!!