I've always had v regular periods - every 28 days. In the last year or two they've been regular but occasionally cycle length will vary. Anything between 24-35 days. But usually slightly shorter. I am now on day 30 with no period yet feeling like AF due to arrive. I am having really bad night sweats and they are usually when I'm hormonal ie at period time and mid month particularly. for those gone through this did your period just stop (my mother said this happened to her) or did cycle time vary for a long time?