I went into peri early 2010, missed one period then next after three months, then ok next month,missed another one then came on after missing two, then went on HRT patches, periods regulated and them dead on time every month on partch 7 ( estrogeon and prog) patch. They were fairly light and that was ok just go used to that and now seem to be out of sink last few months period changed to patch 2 then patch 7 one normal and other more brown/ stringy but lights few days then pinkish so now I don't know what to expect this month!