I am 46 and for the past several months have had irregular periods - anywhere from 2 weeks to 2 months apart and lasting from 3 to 9 days each. I also have had difficulty sleeping at night, and occasionally wake up sweating and hot. I have had severe endometriosis for the past 16 years and had just about given in to a hysterectomy. But since I've had these peri symptoms, my endo has been much better. Could this be from reduced estrogen in my system, since estrogen is what triggers endo? Or am I just having wishful thinking?