My period is 51 days late. 4 negative tests and mild cramping -which is more like gas bloat. My cycles tend to be slightly irregular - 28-31 days but never anything like this. Also last few periods have been very very heavy but very short - usually 2 days. I'm 33, 5'10" 175 with no major health history to speak of. May also be worth mentioning that I have been having night sweats frequently for the past few months.