Hello, my husband and I have been trying to conceive since we've gotten married 8 yrs ago. I was diagnosed with pcos (polycystic ovarian syndrome) in 2006. I'm not overweight, and my cycles come every month but not consistently. Well, this entire month of Nov., I have not gotten my period. I thought I might finally be pregnant so I went to my dr. and the test was negative. How can this be?? I get my period every month, finally miss a cycle, and it's negative?